reports.cpp

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/*
   Copyright (C) 2003 - 2016 by David White <[email protected]>
   Part of the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

#include "global.hpp"

#include "actions/attack.hpp"
#include "attack_prediction.hpp"
//#include "editor/editor_controller.hpp"
//#include "editor/palette/terrain_palettes.hpp"
#include "font.hpp"
#include "game_preferences.hpp"
#include "gettext.hpp"
#include "language.hpp"
#include "map/map.hpp"
#include "marked-up_text.hpp"
#include "mouse_events.hpp"
#include "reports.hpp"
#include "strftime.hpp"
#include "team.hpp"
#include "text.hpp"
#include "tod_manager.hpp"
#include "units/unit.hpp"
#include "units/helper.hpp"
#include "whiteboard/manager.hpp"

#include <boost/shared_ptr.hpp>

#include <cassert>
#include <ctime>

static void add_text(config &report, const std::string &text,
    const std::string &tooltip, const std::string &help = "")
{
    config &element = report.add_child("element");
    element["text"] = text;
    if (!tooltip.empty()) element["tooltip"] = tooltip;
    if (!help.empty()) element["help"] = help;
}

static void add_image(config &report, const std::string &image,
    const std::string &tooltip, const std::string &help = "")
{
    config &element = report.add_child("element");
    element["image"] = image;
    if (!tooltip.empty()) element["tooltip"] = tooltip;
    if (!help.empty()) element["help"] = help;
}

static config text_report(const std::string &text,
    const std::string &tooltip = "", const std::string &help = "")
{
    config r;
    add_text(r, text, tooltip, help);
    return r;
}

static config image_report(const std::string &image,
    const std::string &tooltip = "", const std::string &help = "")
{
    config r;
    add_image(r, image, tooltip, help);
    return r;
}

using font::span_color;

static void add_status(config &r,
    char const *path, char const *desc1, char const *desc2)
{
    std::ostringstream s;
    s << translation::gettext(desc1) << translation::gettext(desc2);
    add_image(r, path, s.str());
}

static std::string flush(std::ostringstream &s)
{
    std::string r(s.str());
    s.str(std::string());
    return r;
}

typedef std::map<std::string, reports::generator_function> static_report_generators;
static static_report_generators static_generators;

struct report_generator_helper
{
    report_generator_helper(const char *name, reports::generator_function g)
    {
        static_generators.insert(static_report_generators::value_type(name, g));
    }
};

#define REPORT_GENERATOR(n, cn) \
    static config report_##n(reports::context & cn); \
    static report_generator_helper reg_gen_##n(#n, &report_##n); \
    static config report_##n(reports::context & cn)

static char const *naps = "</span>";

static const unit *get_visible_unit(reports::context & rc)
{
    return rc.dc().get_visible_unit(rc.screen().displayed_unit_hex(),
        rc.teams()[rc.screen().viewing_team()],
        rc.screen().show_everything());
}

static const unit *get_selected_unit(reports::context & rc)
{
    return rc.dc().get_visible_unit(rc.screen().selected_hex(),
        rc.teams()[rc.screen().viewing_team()],
        rc.screen().show_everything());
}

static config gray_inactive(reports::context & rc, const std::string &str)
{
    if ( rc.screen().viewing_side() == rc.screen().playing_side() )
            return text_report(str);

    return text_report(span_color(font::GRAY_COLOR) + str + naps);
}

static config unit_name(const unit *u)
{
    if (!u) {
        return config();
    }

    /*
     * The name needs to be escaped, it might be set by the user and using
     * markup. Also names often contain a forbidden single quote.
     */
    const std::string& name = font::escape_text(u->name());
    std::ostringstream str, tooltip;
    str << "<b>" << name << "</b>";
    tooltip << _("Name: ") << "<b>" << name << "</b>";
    return text_report(str.str(), tooltip.str());
}

REPORT_GENERATOR(unit_name, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_name(u);
}
REPORT_GENERATOR(selected_unit_name, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_name(u);
}

static config unit_type(const unit* u)
{
    if (!u) return config();
    std::string has_variations_prefix = (u->type().show_variations_in_help() ? ".." : "");
    std::ostringstream str, tooltip;
    str << u->type_name();
    tooltip << _("Type: ") << "<b>" << u->type_name() << "</b>\n"
        << u->unit_description();
    return text_report(str.str(), tooltip.str(), has_variations_prefix + "unit_" + u->type_id());
}
REPORT_GENERATOR(unit_type, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_type(u);
}
REPORT_GENERATOR(selected_unit_type, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_type(u);
}

static config unit_race(const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    str << u->race()->name(u->gender());
    tooltip << _("Race: ") << "<b>" << u->race()->name(u->gender()) << "</b>";
    return text_report(str.str(), tooltip.str(), "..race_" + u->race()->id());
}
REPORT_GENERATOR(unit_race, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_race(u);
}
REPORT_GENERATOR(selected_unit_race, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_race(u);
}

static config unit_side(reports::context & rc, const unit* u)
{
    if (!u) return config();

    config report;
    const team &u_team = rc.teams()[u->side() - 1];
    std::string flag_icon = u_team.flag_icon();
    std::string old_rgb = game_config::flag_rgb;
    std::string new_rgb = team::get_side_color_index(u->side());
    std::string mods = "~RC(" + old_rgb + ">" + new_rgb + ")";
    if (flag_icon.empty())
        flag_icon = game_config::images::flag_icon;

    std::stringstream text;
    text << " " << u->side();

    add_image(report, flag_icon + mods, u_team.side_name(), "");
    add_text(report, text.str(), "", "");
    return report;
}
REPORT_GENERATOR(unit_side, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_side(rc,u);
}
REPORT_GENERATOR(selected_unit_side, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_side(rc, u);
}

static config unit_level(const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    str << u->level();
    tooltip << _("Level: ") << "<b>" << u->level() << "</b>\n";
    const std::vector<std::string> &adv_to = u->advances_to_translated();
    if (adv_to.empty())
        tooltip << _("No advancement");
    else
        tooltip << _("Advances to:") << "\n<b>\t"
            << utils::join(adv_to, "\n\t") << "</b>";
    return text_report(str.str(), tooltip.str());
}
REPORT_GENERATOR(unit_level, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_level(u);
}
REPORT_GENERATOR(selected_unit_level, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_level(u);
}

REPORT_GENERATOR(unit_amla, rc)
{
    const unit *u = get_visible_unit(rc);
    if (!u) return config();
    config res;
    typedef std::pair<std::string, std::string> pair_string;
    for (const pair_string &ps : u->amla_icons()) {
        add_image(res, ps.first, ps.second);
    }
    return res;
}

static config unit_traits(const unit* u)
{
    if (!u) return config();
    config res;
    const std::vector<t_string> &traits = u->trait_names();
    const std::vector<t_string> &descriptions = u->trait_descriptions();
    const std::vector<std::string> &trait_ids = u->get_traits_list();
    unsigned nb = traits.size();
    for (unsigned i = 0; i < nb; ++i)
    {
        std::ostringstream str, tooltip;
        str << traits[i];
        if (i != nb - 1 ) str << ", ";
        tooltip << _("Trait: ") << "<b>" << traits[i] << "</b>\n"
            << descriptions[i];
        add_text(res, str.str(), tooltip.str(), "traits_" + trait_ids[i]);
    }
    return res;
}
REPORT_GENERATOR(unit_traits, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_traits(u);
}
REPORT_GENERATOR(selected_unit_traits, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_traits(u);
}

static config unit_status(reports::context & rc, const unit* u)
{
    if (!u) return config();
    config res;
    map_location displayed_unit_hex = rc.screen().displayed_unit_hex();
    if (rc.map().on_board(displayed_unit_hex) && u->invisible(displayed_unit_hex)) {
        add_status(res, "misc/invisible.png", N_("invisible: "),
            N_("This unit is invisible. It cannot be seen or attacked by enemy units."));
    }
    if (u->get_state(unit::STATE_SLOWED)) {
        add_status(res, "misc/slowed.png", N_("slowed: "),
            N_("This unit has been slowed. It will only deal half its normal damage when attacking and its movement cost is doubled."));
    }
    if (u->get_state(unit::STATE_POISONED)) {
        add_status(res, "misc/poisoned.png", N_("poisoned: "),
            N_("This unit is poisoned. It will lose 8 HP every turn until it can seek a cure to the poison in a village or from a friendly unit with the ‘cures’ ability.\n\nUnits cannot be killed by poison alone. The poison will not reduce it below 1 HP."));
    }
    if (u->get_state(unit::STATE_PETRIFIED)) {
        add_status(res, "misc/petrified.png", N_("petrified: "),
            N_("This unit has been petrified. It may not move or attack."));
    }
    return res;
}
REPORT_GENERATOR(unit_status,rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_status(rc,u);
}
REPORT_GENERATOR(selected_unit_status, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_status(rc, u);
}

static config unit_alignment(reports::context & rc, const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    const std::string align = unit_type::alignment_description(u->alignment(), u->gender());
    const std::string align_id = u->alignment().to_string();
    int cm = combat_modifier(rc.units(), rc.map(), rc.screen().displayed_unit_hex(), u->alignment(),
            u->is_fearless());

    SDL_Color color = font::weapon_color;
    if (cm != 0)
        color = (cm > 0) ? font::good_dmg_color : font::bad_dmg_color;

    str << align << " (" << span_color(color) << utils::signed_percent(cm)
        << naps << ")";

    tooltip << _("Alignment: ") << "<b>" << align << "</b>\n"
        << string_table[align_id + "_description"];

    return text_report(str.str(), tooltip.str(), "time_of_day");
}
REPORT_GENERATOR(unit_alignment, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_alignment(rc, u);
}
REPORT_GENERATOR(selected_unit_alignment, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_alignment(rc, u);
}


static config unit_abilities(const unit* u)
{
    if (!u) return config();
    config res;

    std::vector<bool> active;
    const std::vector<boost::tuple<t_string,t_string,t_string> > &abilities = u->ability_tooltips(&active);
    const size_t abilities_size = abilities.size();
    for ( size_t i = 0; i != abilities_size; ++i )
    {
        // Aliases for readability:
        const std::string &base_name = abilities[i].get<0>().base_str();
        const t_string &display_name = abilities[i].get<1>();
        const t_string &description = abilities[i].get<2>();

        std::ostringstream str, tooltip;

        if ( active[i] )
            str << display_name;
        else
            str << span_color(font::inactive_ability_color) << display_name << naps;
        if ( i + 1 != abilities_size )
            str << ", ";

        tooltip << _("Ability: ") << "<b>" << display_name << "</b>";
        if ( !active[i] )
            tooltip << "<i>" << _(" (inactive)") << "</i>";
        tooltip << '\n' << description;

        add_text(res, str.str(), tooltip.str(), "ability_" + base_name);
    }
    return res;
}
REPORT_GENERATOR(unit_abilities, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_abilities(u);
}
REPORT_GENERATOR(selected_unit_abilities, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_abilities(u);
}


static config unit_hp(reports::context& rc, const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    str << span_color(u->hp_color()) << u->hitpoints()
        << '/' << u->max_hitpoints() << naps;

    std::set<std::string> resistances_table;

    bool att_def_diff = false;
    map_location displayed_unit_hex = rc.screen().displayed_unit_hex();
    for (const utils::string_map::value_type &resist : u->get_base_resistances())
    {
        std::ostringstream line;
        line << translation::gettext(resist.first.c_str()) << ": ";
        // Some units have different resistances when attacking or defending.
        int res_att = 100 - u->resistance_against(resist.first, true, displayed_unit_hex);
        int res_def = 100 - u->resistance_against(resist.first, false, displayed_unit_hex);
        const std::string def_color = unit_helper::resistance_color(res_def);
        if (res_att == res_def) {
            line << "<span foreground=\"" << def_color << "\">" << utils::signed_percent(res_def)
            << naps << '\n';
        } else {
            const std::string att_color = unit_helper::resistance_color(res_att);
            line << "<span foreground=\"" << att_color << "\">" << utils::signed_percent(res_att)
            << naps << "/"
            << "<span foreground=\"" << def_color << "\">" << utils::signed_percent(res_def)
            << naps << '\n';
            att_def_diff = true;
        }
        resistances_table.insert(line.str());
    }

    tooltip << _("Resistances: ");
    if (att_def_diff)
        tooltip << _("(Att / Def)");
    tooltip << '\n';
    for (const std::string &line : resistances_table) {
        tooltip << line;
    }
    return text_report(str.str(), tooltip.str());
}
REPORT_GENERATOR(unit_hp, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_hp(rc, u);
}
REPORT_GENERATOR(selected_unit_hp, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_hp(rc, u);
}

static config unit_xp(const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    str << span_color(u->xp_color()) << u->experience()
        << '/' << u->max_experience() << naps;

    int exp_mod = unit_experience_accelerator::get_acceleration();
    tooltip << _("Experience Modifier: ") << exp_mod << '%';
    return text_report(str.str(), tooltip.str());
}
REPORT_GENERATOR(unit_xp, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_xp(u);
}
REPORT_GENERATOR(selected_unit_xp, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_xp(u);
}

static config unit_advancement_options(const unit* u)
{
    if (!u) return config();
    config res;
    typedef std::pair<std::string, std::string> pair_string;
    for (const pair_string &ps : u->advancement_icons()) {
        add_image(res, ps.first, ps.second);
    }
    return res;
}
REPORT_GENERATOR(unit_advancement_options, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_advancement_options(u);
}
REPORT_GENERATOR(selected_unit_advancement_options, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_advancement_options(u);
}

static config unit_defense(reports::context & rc, const unit* u, const map_location& displayed_unit_hex)
{
    if(!u) {
        return config();
    }

    std::ostringstream str, tooltip;
    const gamemap &map = rc.map();
    if(!rc.map().on_board(displayed_unit_hex)) {
        return config();
    }

    const t_translation::t_terrain &terrain = map[displayed_unit_hex];
    int def = 100 - u->defense_modifier(terrain);
    SDL_Color color = int_to_color(game_config::red_to_green(def));
    str << span_color(color) << def << '%' << naps;
    tooltip << _("Terrain: ") << "<b>" << map.get_terrain_info(terrain).description() << "</b>\n";

    const t_translation::t_list &underlyings = map.underlying_def_terrain(terrain);
    if (underlyings.size() != 1 || underlyings.front() != terrain)
    {
        bool revert = false;
        for (const t_translation::t_terrain &t : underlyings)
        {
            if (t == t_translation::MINUS) {
                revert = true;
            } else if (t == t_translation::PLUS) {
                revert = false;
            } else {
                int t_def = 100 - u->defense_modifier(t);
                SDL_Color color = int_to_color(game_config::red_to_green(t_def));
                tooltip << '\t' << map.get_terrain_info(t).description() << ": "
                    << span_color(color) << t_def << '%' << naps
                    << (revert ? _("maximum^max.") : _("minimum^min.")) << '\n';
            }
        }
    }

    tooltip << "<b>" << _("Defense: ") << span_color(color)  << def << '%' << naps << "</b>";
    return text_report(str.str(), tooltip.str());
}
REPORT_GENERATOR(unit_defense,rc)
{
    const unit *u = get_visible_unit(rc);
    const map_location& displayed_unit_hex = rc.screen().displayed_unit_hex();
    return unit_defense(rc, u, displayed_unit_hex);
}
REPORT_GENERATOR(selected_unit_defense, rc)
{
    const unit *u = get_selected_unit(rc);
    const map_location& selected_hex = rc.screen().selected_hex();
    return unit_defense(rc, u, selected_hex);
}

static config unit_vision(const unit* u)
{
    if (!u) return config();

    // TODO
    std::ostringstream str;
    if (u->vision() != u->total_movement()) {
        str << _("vision: ") << u->vision(); }
    return text_report(str.str());
}
REPORT_GENERATOR(unit_vision, rc)
{
    const unit* u = get_visible_unit(rc);
    return unit_vision(u);
}
REPORT_GENERATOR(selected_unit_vision, rc)
{
    const unit* u = get_selected_unit(rc);
    return unit_vision(u);
}

static config unit_moves(reports::context & rc, const unit* u)
{
    if (!u) return config();
    std::ostringstream str, tooltip;
    double movement_frac = 1.0;
    if (u->side() == rc.screen().playing_side()) {
        movement_frac = double(u->movement_left()) / std::max<int>(1, u->total_movement());
        if (movement_frac > 1.0)
            movement_frac = 1.0;
    }

    std::set<t_translation::t_terrain>::const_iterator terrain_it =
                preferences::encountered_terrains().begin();

    tooltip << _("Movement Costs:") << "\n";
    for (; terrain_it != preferences::encountered_terrains().end();
            ++terrain_it) {
        const t_translation::t_terrain terrain = *terrain_it;
        if (terrain == t_translation::FOGGED || terrain == t_translation::VOID_TERRAIN || terrain == t_translation::OFF_MAP_USER)
            continue;

        const terrain_type& info = rc.map().get_terrain_info(terrain);

        if (info.union_type().size() == 1 && info.union_type()[0] == info.number() && info.is_nonnull()) {

            const std::string& name = info.name();
            const int moves = u->movement_cost(terrain);

            tooltip << name << ": ";

            std::string color;
            //movement  -  range: 1 .. 5, movetype::UNREACHABLE=impassable
            const bool cannot_move = moves > u->total_movement();
            if (cannot_move)        // cannot move in this terrain
                color = "red";
            else if (moves > 1)
                color = "yellow";
            else
                color = "white";
            tooltip << "<span foreground=\"" << color << "\">";
            // A 5 MP margin; if the movement costs go above
            // the unit's max moves + 5, we replace it with dashes.
            if(cannot_move && (moves > u->total_movement() + 5)) {
                tooltip << utils::unicode_figure_dash;
            } else {
                tooltip << moves;
            }
            tooltip << naps << '\n';
        }
    }

    int grey = 128 + int((255 - 128) * movement_frac);
    SDL_Color c = create_color(grey, grey, grey);
    str << span_color(c) << u->movement_left() << '/' << u->total_movement() << naps;
    return text_report(str.str(), tooltip.str());
}
REPORT_GENERATOR(unit_moves, rc)
{
    const unit *u = get_visible_unit(rc);
    return unit_moves(rc, u);
}
REPORT_GENERATOR(selected_unit_moves, rc)
{
    const unit *u = get_selected_unit(rc);
    return unit_moves(rc, u);
}

static int attack_info(reports::context & rc, const attack_type &at, config &res, const unit &u, const map_location &displayed_unit_hex)
{
    std::ostringstream str, tooltip;

    at.set_specials_context(displayed_unit_hex, u.side() == rc.screen().playing_side());
    int base_damage = at.damage();
    int specials_damage = at.modified_damage(false);
    int damage_multiplier = 100;
    int tod_bonus = combat_modifier(rc.units(), rc.map(), displayed_unit_hex, u.alignment(), u.is_fearless());
    damage_multiplier += tod_bonus;
    int leader_bonus = 0;
    if (under_leadership(rc.units(), displayed_unit_hex, &leader_bonus).valid())
        damage_multiplier += leader_bonus;

    bool slowed = u.get_state(unit::STATE_SLOWED);
    int damage_divisor = slowed ? 20000 : 10000;
    // Assume no specific resistance (i.e. multiply by 100).
    int damage = round_damage(specials_damage, damage_multiplier * 100, damage_divisor);

    // Hit points are used to calculate swarm, so they need to be bounded.
    unsigned max_hp = u.max_hitpoints();
    unsigned cur_hp = std::min<unsigned>(std::max(0, u.hitpoints()), max_hp);

    unsigned base_attacks = at.num_attacks();
    unsigned min_attacks, max_attacks;
    at.modified_attacks(false, min_attacks, max_attacks);
    unsigned num_attacks = swarm_blows(min_attacks, max_attacks, cur_hp, max_hp);

    SDL_Color dmg_color = font::weapon_color;
    if ( damage > specials_damage )
        dmg_color = font::good_dmg_color;
    else if ( damage < specials_damage )
        dmg_color = font::bad_dmg_color;

    str << span_color(dmg_color) << "  " << damage << naps << span_color(font::weapon_color)
        << font::weapon_numbers_sep << num_attacks << ' ' << at.name()
        << "</span>\n";
    tooltip << _("Weapon: ") << "<b>" << at.name() << "</b>\n"
        << _("Damage: ") << "<b>" << damage << "</b>\n";

    if ( tod_bonus || leader_bonus || slowed || specials_damage != base_damage )
    {
        tooltip << '\t' << _("Base damage: ") << base_damage << '\n';
        if ( specials_damage != base_damage ) {
            tooltip << '\t' << _("With specials: ") << specials_damage << '\n';
        }
        if (tod_bonus) {
            tooltip << '\t' << _("Time of day: ")
                << utils::signed_percent(tod_bonus) << '\n';
        }
        if (leader_bonus) {
            tooltip << '\t' << _("Leadership: ")
                << utils::signed_percent(leader_bonus) << '\n';
        }
        if (slowed) {
            tooltip << '\t' << _("Slowed: ") << "/ 2" << '\n';
        }
    }

    tooltip << _("Attacks: ") << "<b>" << num_attacks << "</b>\n";
    if ( max_attacks != min_attacks  &&  cur_hp != max_hp ) {
        if ( max_attacks < min_attacks ) {
            // "Reverse swarm"
            tooltip << '\t' << _("Max swarm bonus: ") << (min_attacks-max_attacks) << '\n';
            tooltip << '\t' << _("Swarm: ") << "* "<< (100 - cur_hp*100/max_hp) << "%\n";
            tooltip << '\t' << _("Base attacks: ") << '+' << base_attacks << '\n';
            // The specials line will not necessarily match up with how the
            // specials are calculated, but for an unusual case, simple brevity
            // trumps complexities.
            if ( max_attacks != base_attacks ) {
                int attack_diff = int(max_attacks) - int(base_attacks);
                tooltip << '\t' << _("Specials: ") << utils::signed_value(attack_diff) << '\n';
            }
        }
        else {
            // Regular swarm
            tooltip << '\t' << _("Base attacks: ") << base_attacks << '\n';
            if ( max_attacks != base_attacks ) {
                tooltip << '\t' << _("With specials: ") << max_attacks << '\n';
            }
            if ( min_attacks != 0 ) {
                tooltip << '\t' << _("Subject to swarm: ") << (max_attacks-min_attacks) << '\n';
            }
            tooltip << '\t' << _("Swarm: ") << "* "<< (cur_hp*100/max_hp) << "%\n";
        }
    }
    else if ( num_attacks != base_attacks ) {
        tooltip << '\t' << _("Base attacks: ") << base_attacks << '\n';
        tooltip << '\t' << _("With specials: ") << num_attacks << '\n';
    }

    add_text(res, flush(str), flush(tooltip));

    std::string range = string_table["range_" + at.range()];
    std::string lang_type = string_table["type_" + at.type()];

    str << span_color(font::weapon_details_color) << "  " << "  "
        << range << font::weapon_details_sep
        << lang_type << "</span>\n";

    tooltip << _("Weapon range: ") << "<b>" << range << "</b>\n"
        << _("Damage type: ")  << "<b>" << lang_type << "</b>\n"
        << _("Damage versus: ") << '\n';

    // Show this weapon damage and resistance against all the different units.
    // We want weak resistances (= good damage) first.
    std::map<int, std::set<std::string>, std::greater<int> > resistances;
    std::set<std::string> seen_types;
    const team &unit_team = rc.teams()[u.side() - 1];
    const team &viewing_team = rc.teams()[rc.screen().viewing_team()];
    for (const unit &enemy : rc.units())
    {
        if (enemy.incapacitated()) //we can't attack statues so don't display them in this tooltip
            continue;
        if (!unit_team.is_enemy(enemy.side()))
            continue;
        const map_location &loc = enemy.get_location();
        if (viewing_team.fogged(loc) ||
            (viewing_team.is_enemy(enemy.side()) && enemy.invisible(loc)))
            continue;
        bool new_type = seen_types.insert(enemy.type_id()).second;
        if (new_type) {
            int resistance = enemy.resistance_against(at, false, loc);
            resistances[resistance].insert(enemy.type_name());
        }
    }

    typedef std::pair<int, std::set<std::string> > resist_units;
    for (const resist_units &resist : resistances) {
        int damage = round_damage(specials_damage, damage_multiplier * resist.first, damage_divisor);
        tooltip << "<b>" << damage << "</b>  "
            << "<i>(" << utils::signed_percent(resist.first-100) << ")</i> : "
            << utils::join(resist.second, ", ") << '\n';
    }
    add_text(res, flush(str), flush(tooltip));

    const std::string &accuracy_parry = at.accuracy_parry_description();
    if (!accuracy_parry.empty())
    {
        str << span_color(font::weapon_details_color)
            << "  " << accuracy_parry << "</span>\n";
        int accuracy = at.accuracy();
        if (accuracy) {
            tooltip << _("Accuracy:") << "<b>"
                << utils::signed_percent(accuracy) << "</b>\n";
        }
        int parry = at.parry();
        if (parry) {
            tooltip << _("Parry:") << "<b>"
                << utils::signed_percent(parry) << "</b>\n";
            }
        add_text(res, flush(str), flush(tooltip));
    }

    at.set_specials_context_for_listing();
    std::vector<bool> active;
    const std::vector<std::pair<t_string, t_string> > &specials = at.special_tooltips(&active);
    const size_t specials_size = specials.size();
    for ( size_t i = 0; i != specials_size; ++i )
    {
        // Aliases for readability:
        const t_string &name = specials[i].first;
        const t_string &description = specials[i].second;
        const SDL_Color &details_color = active[i] ? font::weapon_details_color :
                                                     font::inactive_details_color;

        str << span_color(details_color) << "  " << "  " << name << naps << '\n';
        std::string help_page = "weaponspecial_" + name.base_str();
        tooltip << _("Weapon special: ") << "<b>" << name << "</b>";
        if ( !active[i] )
            tooltip << "<i>" << _(" (inactive)") << "</i>";
        tooltip << '\n' << description;

        add_text(res, flush(str), flush(tooltip), help_page);
    }
    return damage;
}

// Conversion routine for both unscathed and damage change percentage.
static void format_prob(char str_buf[10], double prob)
{

    if(prob > 0.9995) {
        snprintf(str_buf, 10, "100 %%");
    } else if(prob >= 0.1) {
        snprintf(str_buf, 10, "%4.1f %%", 100.0 * prob);
    } else {
        snprintf(str_buf, 10, " %3.1f %%", 100.0 * prob);
    }

    str_buf[9] = '\0';  //prevents _snprintf error
}

static void format_hp(char str_buf[10], int hp)
{
    if(hp < 10) {
        snprintf(str_buf, 10, "   %i", hp);
    } else if(hp < 99) {
        snprintf(str_buf, 10, "  %i", hp);
    } else {
        snprintf(str_buf, 10, " %i", hp);
    }

    str_buf[9] = '\0';  //prevents _snprintf error
}

static config unit_weapons(reports::context & rc, const unit *attacker, const map_location &attacker_pos, const unit *defender, bool show_attacker)
{
    if (!attacker || !defender) return config();

    const unit* u = show_attacker ? attacker : defender;
    const map_location unit_loc = show_attacker ? attacker_pos : defender->get_location();

    std::ostringstream str, tooltip;
    config res;

    std::vector<battle_context> weapons;
    for (unsigned int i = 0; i < attacker->attacks().size(); i++) {
        // skip weapons with attack_weight=0
        if (attacker->attacks()[i].attack_weight() > 0) {
            battle_context weapon(rc.units(), attacker_pos, defender->get_location(), i, -1, 0.0, nullptr, attacker);
            weapons.push_back(weapon);
        }
    }

    for (const battle_context& weapon : weapons) {

        // Predict the battle outcome.
        combatant attacker_combatant(weapon.get_attacker_stats());
        combatant defender_combatant(weapon.get_defender_stats());
        attacker_combatant.fight(defender_combatant);

        const battle_context_unit_stats& context_unit_stats =
                show_attacker ? weapon.get_attacker_stats() : weapon.get_defender_stats();

        int total_damage = 0;
        int base_damage = 0;
        int num_blows = 0;
        int chance_to_hit = 0;
        t_string weapon_name = _("None");

        SDL_Color dmg_color = font::weapon_color;
        if (context_unit_stats.weapon) {
            base_damage = attack_info(rc, *context_unit_stats.weapon, res, *u, unit_loc);
            total_damage = context_unit_stats.damage;
            num_blows = context_unit_stats.num_blows;
            chance_to_hit = context_unit_stats.chance_to_hit;
            weapon_name = context_unit_stats.weapon->name();

            if ( total_damage > base_damage )
                dmg_color = font::good_dmg_color;
            else if ( total_damage < base_damage )
                dmg_color = font::bad_dmg_color;
        } else {
            str << span_color(font::weapon_color) << weapon_name << naps << "\n";
            tooltip << _("Weapon: ") << "<b>" << weapon_name << "</b>\n"
                << _("Damage: ") << "<b>" << "0" << "</b>\n";
        }

        SDL_Color chance_color = int_to_color(game_config::red_to_green(chance_to_hit));

        // Total damage.
        str << "  " << span_color(dmg_color) << total_damage << naps << span_color(font::weapon_color)
            << utils::unicode_en_dash << num_blows
            << " (" << span_color(chance_color) << chance_to_hit << "%" << naps << ")"
            << naps << "\n";

        tooltip << _("Weapon: ") << "<b>" << weapon_name << "</b>\n"
                << _("Total damage") << "<b>" << total_damage << "</b>\n";

        // Create the hitpoints distribution.
        std::vector<std::pair<int, double> > hp_prob_vector;

        // First, we sort the probabilities in ascending order.
        std::vector<std::pair<double, int> > prob_hp_vector;
        int i;

        combatant* c = show_attacker ? &attacker_combatant : &defender_combatant;

        for(i = 0; i < static_cast<int>(c->hp_dist.size()); i++) {
            double prob = c->hp_dist[i];

            // We keep only values above 0.1%.
            if(prob > 0.001)
                prob_hp_vector.push_back(std::pair<double, int>(prob, i));
        }

        std::sort(prob_hp_vector.begin(), prob_hp_vector.end());

        //TODO fendrin -- make that dynamically
        int max_hp_distrib_rows_ = 10;

        // We store a few of the highest probability hitpoint values.
        int nb_elem = std::min<int>(max_hp_distrib_rows_, prob_hp_vector.size());

        for(i = prob_hp_vector.size() - nb_elem;
                i < static_cast<int>(prob_hp_vector.size()); i++) {

            hp_prob_vector.push_back(std::pair<int, double>
            (prob_hp_vector[i].second, prob_hp_vector[i].first));
        }

        // Then, we sort the hitpoint values in ascending order.
        std::sort(hp_prob_vector.begin(), hp_prob_vector.end());
        // And reverse the order. Might be doable in a better manor.
        std::reverse(hp_prob_vector.begin(), hp_prob_vector.end());

        for(i = 0;
                i < static_cast<int>(hp_prob_vector.size()); i++) {

            int hp = hp_prob_vector[i].first;
            double prob = hp_prob_vector[i].second;

            char prob_buf[10];
            format_prob(prob_buf, prob);
            char hp_buf[10];
            format_hp(hp_buf, hp);

            SDL_Color prob_color = int_to_color(game_config::blue_to_white(prob * 100.0, true));

            str     << span_color(font::weapon_details_color) << "  " << "  "
                    << span_color(u->hp_color(hp)) << hp_buf << naps
                    << " " << font::weapon_numbers_sep << " "
                    << span_color(prob_color) << prob_buf << naps
                    << naps << "\n";
        }

        add_text(res, flush(str), flush(tooltip));
    }
    return res;
}

static config unit_weapons(reports::context & rc, const unit *u)
{
    if (!u || u->attacks().empty()) return config();
    map_location displayed_unit_hex = rc.screen().displayed_unit_hex();
    config res;

    //TODO enable after the string frezze is lifted
    //const std::string attack_headline =
    //      ( u->attacks().size() > 1 ) ? N_("Attacks") : N_("Attack");

    //add_text(res,  /*span_color(font::weapon_details_color)
    //      +*/ attack_headline /*+ "</span>\n"*/ + '\n', "");

    for (const attack_type &at : u->attacks())
    {
        attack_info(rc, at, res, *u, displayed_unit_hex);
    }
    return res;
}
REPORT_GENERATOR(unit_weapons, rc)
{
    const unit *u = get_visible_unit(rc);
    if (!u) return config();

    return unit_weapons(rc, u);
}
REPORT_GENERATOR(highlighted_unit_weapons, rc)
{
    const unit *u = get_selected_unit(rc);
    const unit *sec_u = get_visible_unit(rc);

    if (!u) return config();
    if (!sec_u || u == sec_u) return unit_weapons(rc, sec_u);

    map_location highlighted_hex = rc.screen().displayed_unit_hex();
    map_location attack_loc;
    if (rc.mhb())
        attack_loc = rc.mhb()->current_unit_attacks_from(highlighted_hex);

    if (!attack_loc.valid())
        return unit_weapons(rc, sec_u);

    return unit_weapons(rc, u, attack_loc, sec_u, false);
}
REPORT_GENERATOR(selected_unit_weapons, rc)
{
    const unit *u = get_selected_unit(rc);
    const unit *sec_u = get_visible_unit(rc);

    if (!u) return config();
    if (!sec_u || u == sec_u) return unit_weapons(rc, u);

    map_location highlighted_hex = rc.screen().displayed_unit_hex();
    map_location attack_loc;
    if (rc.mhb())
        attack_loc = rc.mhb()->current_unit_attacks_from(highlighted_hex);

    if (!attack_loc.valid())
        return unit_weapons(rc, u);

    return unit_weapons(rc, u, attack_loc, sec_u, true);
}

REPORT_GENERATOR(unit_image,rc)
{
    const unit *u = get_visible_unit(rc);
    if (!u) return config();
    return image_report(u->absolute_image() + u->image_mods());
}
REPORT_GENERATOR(selected_unit_image, rc)
{
    const unit *u = get_selected_unit(rc);
    if (!u) return config();
    return image_report(u->absolute_image() + u->image_mods());
}

REPORT_GENERATOR(selected_unit_profile, rc)
{
    const unit *u = get_selected_unit(rc);
    if (!u) return config();
    return image_report(u->small_profile());
}
REPORT_GENERATOR(unit_profile, rc)
{
    const unit *u = get_visible_unit(rc);
    if (!u) return config();
    return image_report(u->small_profile());
}

REPORT_GENERATOR(tod_stats, rc)
{
    std::ostringstream tooltip;
    std::ostringstream text;

    const map_location& selected_hex = rc.screen().selected_hex();
    const map_location& mouseover_hex = rc.screen().mouseover_hex();

    const map_location& hex = mouseover_hex.valid() ? mouseover_hex : selected_hex;

    const std::vector<time_of_day>& schedule = rc.tod().times(hex);

    int current = rc.tod().get_current_time(hex);
    int i = 0;
    for (const time_of_day& tod : schedule) {
        if (i == current) tooltip << "<big><b>";
        tooltip << tod.name << "\n";
        if (i == current) tooltip << "</b></big>";
        i++;
    }

    int times = schedule.size();
    text << current + 1 << "/" << times;

    return text_report(text.str(), tooltip.str(), "..schedule");
}

static config time_of_day_at(reports::context & rc, const map_location& mouseover_hex)
{
    std::ostringstream tooltip;
    time_of_day tod;
    const team &viewing_team = rc.teams()[rc.screen().viewing_team()];
    if (viewing_team.shrouded(mouseover_hex)) {
        // Don't show time on shrouded tiles.
        tod = rc.tod().get_time_of_day();
    } else if (viewing_team.fogged(mouseover_hex)) {
        // Don't show illuminated time on fogged tiles.
        tod = rc.tod().get_time_of_day(mouseover_hex);
    } else {
        tod = rc.tod().get_illuminated_time_of_day(rc.units(), rc.map(), mouseover_hex);
    }

    int b = tod.lawful_bonus;

    std::string  lawful_color("white");
    std::string chaotic_color("white");
    std::string liminal_color("white");

    if (b != 0) {
        lawful_color  = (b > 0) ? "green" : "red";
        chaotic_color = (b < 0) ? "green" : "red";
        liminal_color = "red";
    }
    tooltip << tod.name << '\n'
        << _("Lawful units: ") << "<span foreground=\"" << lawful_color  << "\">"
        << utils::signed_percent(b)  << "</span>\n"
        << _("Neutral units: ") << utils::signed_percent(0)  << '\n'
        << _("Chaotic units: ") << "<span foreground=\"" << chaotic_color << "\">"
        << utils::signed_percent(-b) << "</span>\n"
        << _("Liminal units: ") << "<span foreground=\"" << liminal_color << "\">"
        << utils::signed_percent(-(abs(b))) << "</span>\n";

    std::string tod_image = tod.image;
    if (tod.bonus_modified > 0) tod_image += "~BRIGHTEN()";
    else if (tod.bonus_modified < 0) tod_image += "~DARKEN()";

    return image_report(tod_image, tooltip.str(), "time_of_day_" + tod.id);
}
REPORT_GENERATOR(time_of_day, rc)
{
    map_location mouseover_hex = rc.screen().mouseover_hex();
    if (mouseover_hex.valid()) return time_of_day_at(rc, mouseover_hex);
    return time_of_day_at(rc, rc.screen().selected_hex());
}

static config unit_box_at(reports::context & rc, const map_location& mouseover_hex)
{
    std::ostringstream tooltip;
    time_of_day local_tod;
    time_of_day global_tod = rc.tod().get_time_of_day();
    const team &viewing_team = rc.teams()[rc.screen().viewing_team()];
    if (viewing_team.shrouded(mouseover_hex)) {
        // Don't show time on shrouded tiles.
        local_tod = global_tod;
    } else if (viewing_team.fogged(mouseover_hex)) {
        // Don't show illuminated time on fogged tiles.
        local_tod = rc.tod().get_time_of_day(mouseover_hex);
    } else {
        local_tod = rc.tod().get_illuminated_time_of_day(rc.units(), rc.map(),mouseover_hex);
    }

    int bonus = local_tod.lawful_bonus;

    std::string  lawful_color("white");
    std::string chaotic_color("white");
    std::string liminal_color("white");

    if (bonus != 0) {
        lawful_color  = (bonus > 0) ? "green" : "red";
        chaotic_color = (bonus < 0) ? "green" : "red";
        liminal_color = "red";
    }
    tooltip << local_tod.name << '\n'
        << _("Lawful units: ") << "<span foreground=\"" << lawful_color  << "\">"
        << utils::signed_percent(bonus)  << "</span>\n"
        << _("Neutral units: ") << utils::signed_percent(0)  << '\n'
        << _("Chaotic units: ") << "<span foreground=\"" << chaotic_color << "\">"
        << utils::signed_percent(-bonus) << "</span>\n"
        << _("Liminal units: ") << "<span foreground=\"" << liminal_color << "\">"
        << utils::signed_percent(-(abs(bonus))) << "</span>\n";

    std::string local_tod_image  = "themes/classic/" + local_tod.image;
    std::string global_tod_image = "themes/classic/" + global_tod.image;
    if (local_tod.bonus_modified > 0) local_tod_image += "~BRIGHTEN()";
    else if (local_tod.bonus_modified < 0) local_tod_image += "~DARKEN()";

    const gamemap &map = rc.map();
    t_translation::t_terrain terrain = map.get_terrain(mouseover_hex);

    //if (terrain == t_translation::OFF_MAP_USER)
    //  return config();

    //if (map.is_keep(mouseover_hex)) {
    //  add_image(cfg, "icons/terrain/terrain_type_keep.png", "");
    //}

    const t_translation::t_list& underlying_terrains = map.underlying_union_terrain(terrain);

    std::string bg_terrain_image;

    for (const t_translation::t_terrain& underlying_terrain : underlying_terrains) {
        const std::string& terrain_id = map.get_terrain_info(underlying_terrain).id();
        bg_terrain_image = "~BLIT(unit_env/terrain/terrain-" + terrain_id + ".png)" + bg_terrain_image;
    }

    std::stringstream color;
    color << local_tod.color;

    bg_terrain_image = bg_terrain_image + "~CS(" + color.str() + ")";

    const unit *u = get_visible_unit(rc);
    std::string unit_image;
    if (u)
        unit_image = "~BLIT(" + u->absolute_image() + u->image_mods() + ",35,22)";

    std::string tod_image = global_tod_image + "~BLIT(" + local_tod_image  + ")";

    return image_report(tod_image + bg_terrain_image + unit_image, tooltip.str(), "time_of_day");
}
REPORT_GENERATOR(unit_box, rc)
{
    map_location mouseover_hex = rc.screen().mouseover_hex();
    return unit_box_at(rc, mouseover_hex);
}


REPORT_GENERATOR(turn, rc)
{
    std::ostringstream str;
    str << rc.tod().turn();
    int nb = rc.tod().number_of_turns();
    if (nb != -1) str << '/' << nb;
    return text_report(str.str());
}

REPORT_GENERATOR(gold, rc)
{
    std::ostringstream str;
    int viewing_side = rc.screen().viewing_side();
    // Suppose the full unit map is applied.
    int fake_gold = rc.teams()[viewing_side - 1].gold();

    if (rc.wb())
        fake_gold -= rc.wb()->get_spent_gold_for(viewing_side);
    char const *end = naps;
    if (viewing_side != rc.screen().playing_side()) {
        str << span_color(font::GRAY_COLOR);
    }
    else if (fake_gold < 0) {
        str << span_color(font::BAD_COLOR);
    }
    else {
        end = "";
    }
    str << utils::half_signed_value(fake_gold) << end;
    return text_report(str.str());
}

REPORT_GENERATOR(villages, rc)
{
    std::ostringstream str;
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    team_data td = rc.dc().calculate_team_data(viewing_team, viewing_side);
    str << td.villages << '/';
    if (viewing_team.uses_shroud()) {
        int unshrouded_villages = 0;
        for (const map_location &loc : rc.map().villages()) {
            if (!viewing_team.shrouded(loc))
                ++unshrouded_villages;
        }
        str << unshrouded_villages;
    } else {
        str << rc.map().villages().size();
    }
    return gray_inactive(rc,str.str());
}

REPORT_GENERATOR(num_units, rc)
{
    return gray_inactive(rc, std::to_string(rc.dc().side_units(rc.screen().viewing_side())));
}

REPORT_GENERATOR(upkeep, rc)
{
    std::ostringstream str;
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    team_data td = rc.dc().calculate_team_data(viewing_team, viewing_side);
    str << td.expenses << " (" << td.upkeep << ")";
    return gray_inactive(rc,str.str());
}

REPORT_GENERATOR(expenses, rc)
{
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    team_data td = rc.dc().calculate_team_data(viewing_team, rc.screen().viewing_side());
    return gray_inactive(rc,std::to_string(td.expenses));
}

REPORT_GENERATOR(income, rc)
{
    std::ostringstream str;
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    team_data td = rc.dc().calculate_team_data(viewing_team, viewing_side);
    char const *end = naps;
    if (viewing_side != rc.screen().playing_side()) {
        if (td.net_income < 0) {
            td.net_income = - td.net_income;
            str << span_color(font::GRAY_COLOR);
            str << utils::unicode_minus;
        }
        else {
            str << span_color(font::GRAY_COLOR);
        }
    }
    else if (td.net_income < 0) {
        td.net_income = - td.net_income;
        str << span_color(font::BAD_COLOR);
        str << utils::unicode_minus;
    }
    else {
        end = "";
    }
    str << td.net_income << end;
    return text_report(str.str());
}

namespace {
void blit_tced_icon(config &cfg, const std::string &terrain_id, const std::string &icon_image, bool high_res,
    const std::string &terrain_name) {
    const std::string tc_base = high_res ? "images/buttons/icon-base-32.png" : "images/buttons/icon-base-16.png";
    const std::string terrain_image = "terrain/" + icon_image + (high_res ? "_30.png" : ".png");
    add_image(cfg, tc_base + "~RC(magenta>" + terrain_id + ")~BLIT(" + terrain_image + ")", terrain_name);
}
}

REPORT_GENERATOR(terrain_info, rc)
{
    const gamemap &map = rc.map();
    map_location mouseover_hex = rc.screen().mouseover_hex();

    if (!map.on_board(mouseover_hex))
        mouseover_hex = rc.screen().selected_hex();

    if (!map.on_board(mouseover_hex))
        return config();

    t_translation::t_terrain terrain = map.get_terrain(mouseover_hex);
    if (terrain == t_translation::OFF_MAP_USER)
        return config();

    std::ostringstream str;
    config cfg;

    bool high_res = false;

    if (display::get_singleton()->shrouded(mouseover_hex)) {
        return cfg;
    }
    //TODO
//  if (display::get_singleton()->fogged(mouseover_hex)) {
//      blit_tced_icon(cfg, "fog", high_res);
//  }
//
//  if (map.is_keep(mouseover_hex)) {
//      blit_tced_icon(cfg, "keep", high_res);
//  }

    const t_translation::t_list& underlying_terrains = map.underlying_union_terrain(terrain);
    for (const t_translation::t_terrain& underlying_terrain : underlying_terrains) {

        if (underlying_terrain == t_translation::OFF_MAP_USER)
            continue;
        const std::string& terrain_id = map.get_terrain_info(underlying_terrain).id();
        const std::string& terrain_name = map.get_terrain_string(underlying_terrain);
        const std::string& terrain_icon = map.get_terrain_info(underlying_terrain).icon_image();
        if (terrain_icon.empty())
            continue;
        blit_tced_icon(cfg, terrain_id, terrain_icon, high_res, terrain_name);
    }
    return cfg;
}

REPORT_GENERATOR(terrain, rc)
{
    const gamemap &map = rc.map();
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    map_location mouseover_hex = rc.screen().mouseover_hex();
    if (!map.on_board(mouseover_hex) || viewing_team.shrouded(mouseover_hex))
        return config();

    t_translation::t_terrain terrain = map.get_terrain(mouseover_hex);
    if (terrain == t_translation::OFF_MAP_USER)
        return config();

    std::ostringstream str;
    if (map.is_village(mouseover_hex))
    {
        int owner = rc.dc().village_owner(mouseover_hex) + 1;
        if (owner == 0 || viewing_team.fogged(mouseover_hex)) {
            str << map.get_terrain_info(terrain).income_description();
        } else if (owner == viewing_side) {
            str << map.get_terrain_info(terrain).income_description_own();
        } else if (viewing_team.is_enemy(owner)) {
            str << map.get_terrain_info(terrain).income_description_enemy();
        } else {
            str << map.get_terrain_info(terrain).income_description_ally();
        }

        const std::string& underlying_desc = map.get_underlying_terrain_string(terrain);
        if(!underlying_desc.empty()) {
            str << underlying_desc;
        }
    } else {
        str << map.get_terrain_string(terrain);
    }

    return text_report(str.str());
}

REPORT_GENERATOR(zoom_level, rc)
{
    std::ostringstream text;
    std::ostringstream tooltip;
    std::ostringstream help;

    text << static_cast<int>(rc.screen().get_zoom_factor() * 100) << "%";

    return text_report(text.str(), tooltip.str(), help.str());
}

REPORT_GENERATOR(position, rc)
{
    const gamemap &map = rc.map();
    map_location mouseover_hex = rc.screen().mouseover_hex(),
        displayed_unit_hex = rc.screen().displayed_unit_hex(),
        selected_hex = rc.screen().selected_hex();

    if (!map.on_board(mouseover_hex)) {
        if (!map.on_board(selected_hex))
            return config();
        else {
            mouseover_hex = selected_hex;
        }
    }

    t_translation::t_terrain terrain = map[mouseover_hex];
    if (terrain == t_translation::OFF_MAP_USER)
        return config();

    std::ostringstream str;
    str << mouseover_hex;

    const unit *u = get_visible_unit(rc);
    const team &viewing_team = rc.teams()[rc.screen().viewing_team()];
    if (!u ||
        (displayed_unit_hex != mouseover_hex &&
         displayed_unit_hex != rc.screen().selected_hex()) ||
        viewing_team.shrouded(mouseover_hex))
        return text_report(str.str());

    int move_cost = u->movement_cost(terrain);
    int defense = 100 - u->defense_modifier(terrain);
    if (move_cost < movetype::UNREACHABLE) {
        str << " " << defense << "%," << move_cost;
    } else if (mouseover_hex == displayed_unit_hex) {
        str << " " << defense << "%,‒";
    } else {
        str << " ‒";
    }
    return text_report(str.str());
}

REPORT_GENERATOR(side_playing, rc)
{
    const team &active_team = rc.teams()[rc.screen().playing_team()];
    std::string flag_icon = active_team.flag_icon();
    std::string old_rgb = game_config::flag_rgb;
    std::string new_rgb = team::get_side_color_index(rc.screen().playing_side());
    std::string mods = "~RC(" + old_rgb + ">" + new_rgb + ")";
    if (flag_icon.empty())
        flag_icon = game_config::images::flag_icon;
    return image_report(flag_icon + mods, active_team.side_name());
}

REPORT_GENERATOR(observers, rc)
{
    const std::set<std::string> &observers = rc.screen().observers();
    if (observers.empty())
        return config();

    std::ostringstream str;
    str << _("Observers:") << '\n';
    for (const std::string &obs : observers) {
        str << obs << '\n';
    }
    return image_report(game_config::images::observer, str.str());
}

/* TODO unused
REPORT_GENERATOR(selected_terrain)
{
    const std::string selected_terrain = editor::get_selected_terrain();
    if (selected_terrain.empty())
        return config();
    else
        return text_report(selected_terrain);
}
*/

/* TODO this is unused
REPORT_GENERATOR(edit_left_button_function)
{
    const std::string left_button_function = editor::get_left_button_function();
    if (left_button_function.empty())
        return config();
    else
        return text_report(left_button_function);
}
*/

REPORT_GENERATOR(report_clock, /*rc*/)
{
    time_t t = std::time(nullptr);
    struct tm *lt = std::localtime(&t);
    if (!lt) return config();
    char temp[15];
    size_t s = util::strftime(temp, 15,
        (preferences::use_twelve_hour_clock_format() ? _("%I:%M %p") : _("%H:%M")),
        lt);
    return s ? text_report(temp) : config();

}

REPORT_GENERATOR(report_countdown, rc)
{
    int viewing_side = rc.screen().viewing_side();
    const team &viewing_team = rc.teams()[viewing_side - 1];
    int min, sec;
    if (viewing_team.countdown_time() == 0)
        return report_report_clock(rc);
    std::ostringstream str;
    sec = viewing_team.countdown_time() / 1000;
    char const *end = naps;
    if (viewing_side != rc.screen().playing_side())
        str << span_color(font::GRAY_COLOR);
    else if (sec < 60)
        str << "<span foreground=\"#c80000\">";
    else if (sec < 120)
        str << "<span foreground=\"#c8c800\">";
    else
        end = "";
    min = sec / 60;
    str << min << ':';
    sec = sec % 60;
    if (sec < 10) str << '0';
    str << sec << end;
    return text_report(str.str());
}

void reports::register_generator(const std::string &name, reports::generator *g)
{
    dynamic_generators_[name] = boost::shared_ptr<reports::generator>(g);
}

config reports::generate_report(const std::string &name, reports::context & rc, bool only_static)
{
    if (!only_static) {
        dynamic_report_generators::const_iterator i = dynamic_generators_.find(name);
        if (i != dynamic_generators_.end())
            return i->second->generate(rc);
    }
    static_report_generators::const_iterator j = static_generators.find(name);
    if (j != static_generators.end())
        return j->second(rc);
    return config();
}

const std::set<std::string> &reports::report_list()
{
    if (!all_reports_.empty()) return all_reports_;
    for (const static_report_generators::value_type &v : static_generators) {
        all_reports_.insert(v.first);
    }
    for (const dynamic_report_generators::value_type &v : dynamic_generators_) {
        all_reports_.insert(v.first);
    }
    return all_reports_;
}