import { SYSTEM } from "../config/system.mjs"

export function log(...args) {
  if (game?.settings?.get(game.system.id, "debug")) {
    console.log(...args)
  }
}

export async function loadCompendiumData(compendium) {
  const pack = game.packs.get(compendium)
  return await pack?.getDocuments() ?? []
}

export async function loadCompendium(compendium, filter = item => true) {
  let compendiumData = await loadCompendiumData(compendium)
  return compendiumData.filter(filter)
}

export function pushCombatOptions(html, options) {
  options.push({ name: "Reset Progression", condition: true, icon: '<i class="fas fa-rotate-right"></i>', callback: target => { game.combat.resetProgression(target.data('combatant-id')); } })
}

export function setHookListeners() {

  Hooks.on('renderTokenHUD', async (hud, html, data) => {
    if (html.querySelector(".lethal-hp-loss-hud")) return
    // The token/actor is on the HUD application instance, not the third param.
    // hud.token / hud.object gives the Token (PlaceableObject), which has .actor.
    const hudActor = hud.token?.actor ?? hud.object?.actor
    if (!hudActor) return
    const _toggleHudWraps = (prefix) => {
      const enable = $(html).find(`.${prefix}-wrap`)[0].classList.contains(`${prefix}-hud-disabled`)
      for (let i = 0; i < 3; i++) {
        const w = $(html).find(`.${prefix}-wrap`)[i]
        w.classList.toggle(`${prefix}-hud-active`, enable)
        w.classList.toggle(`${prefix}-hud-disabled`, !enable)
      }
    }
    const _disableHudWraps = (prefix) => {
      for (let i = 0; i < 3; i++) {
        const w = $(html).find(`.${prefix}-wrap`)[i]
        w.classList.remove(`${prefix}-hud-active`)
        w.classList.add(`${prefix}-hud-disabled`)
      }
    }

    // HP Loss Button
    const lossHPButton = await foundry.applications.handlebars.renderTemplate('systems/fvtt-lethal-fantasy/templates/loss-hp-hud.hbs', {})
    $(html).find('div.left').append(lossHPButton);
    $(html).find('img.lethal-hp-loss-hud').click((event) => {
      event.preventDefault();
      _toggleHudWraps("hp-loss")
    })
    $(html).find('.loss-hp-hud-click').click(async (event) => {
      event.preventDefault();
      await hudActor.applyDamage(Number(event.currentTarget.dataset.hpValue));
      _disableHudWraps("hp-loss")
    })

    // HP Gain Button
    const gainHPButton = await foundry.applications.handlebars.renderTemplate('systems/fvtt-lethal-fantasy/templates/gain-hp-hud.hbs', {})
    $(html).find('div.left').append(gainHPButton);
    $(html).find('img.lethal-hp-gain-hud').click((event) => {
      event.preventDefault();
      _toggleHudWraps("hp-gain")
    })
    $(html).find('.gain-hp-hud-click').click(async (event) => {
      event.preventDefault();
      await hudActor.applyDamage(Number(event.currentTarget.dataset.hpValue));
      // Clear bleeding wounds on heal
      const wounds = foundry.utils.duplicate(hudActor.system.hp.wounds || [])
      if (wounds.some(w => w.description === "Bleeding")) {
        await hudActor.update({
          "system.hp.wounds": wounds.map(w =>
            w.description === "Bleeding" ? { value: 0, duration: 0 } : w
          )
        })
      }
      _disableHudWraps("hp-gain")
    })

    // Luck/Grit Buttons
    const luckGritButton = await foundry.applications.handlebars.renderTemplate('systems/fvtt-lethal-fantasy/templates/luck-grit-hud.hbs', {})
    $(html).find('div.left').append(luckGritButton);
    $(html).find('.lethal-luck-grit-hud').click((event) => {
      event.preventDefault();
      let wrap = $(html).find('.luck-grit-wrap')[0]
      if (wrap.classList.contains("luck-grit-hud-disabled")) {
        wrap.classList.add('luck-grit-hud-active');
        wrap.classList.remove('luck-grit-hud-disabled');
      } else {
        wrap.classList.remove('luck-grit-hud-active');
        wrap.classList.add('luck-grit-hud-disabled');
      }
    })
    $(html).find('.luck-grit-btn').click(async (event) => {
      event.preventDefault();
      const resource = event.currentTarget.dataset.resource;
      const amount = Number(event.currentTarget.dataset.amount);
      const current = Number(foundry.utils.getProperty(hudActor.system, `${resource}.current`)) || 0;
      const newValue = Math.max(0, current + amount);
      await hudActor.update({ [`system.${resource}.current`]: newValue });
      $(html).find('.luck-grit-wrap')[0].classList.remove('luck-grit-hud-active');
      $(html).find('.luck-grit-wrap')[0].classList.add('luck-grit-hud-disabled');
    })
  })
}

export function registerHandlebarsHelpers() {

  Handlebars.registerHelper('isNull', function (val) {
    return val == null;
  });
  Handlebars.registerHelper('match', function (val, search) {
    if (val && search) {
      return val?.match(search);
    }
    return false
  });

  Handlebars.registerHelper('exists', function (val) {
    return val != null && val !== undefined;
  });

  Handlebars.registerHelper('isEmpty', function (list) {
    if (list) return list.length === 0;
    else return false;
  });

  Handlebars.registerHelper('notEmpty', function (list) {
    return list.length > 0;
  });

  Handlebars.registerHelper('isNegativeOrNull', function (val) {
    return val <= 0;
  });

  Handlebars.registerHelper('isNegative', function (val) {
    return val < 0;
  });

  Handlebars.registerHelper('isPositive', function (val) {
    return val > 0;
  });

  Handlebars.registerHelper('equals', function (val1, val2) {
    return val1 === val2;
  });

  Handlebars.registerHelper('neq', function (val1, val2) {
    return val1 !== val2;
  });

  Handlebars.registerHelper('gt', function (val1, val2) {
    return val1 > val2;
  })

  Handlebars.registerHelper('lt', function (val1, val2) {
    return val1 < val2;
  })

  Handlebars.registerHelper('gte', function (val1, val2) {
    return val1 >= val2;
  })

  Handlebars.registerHelper('lte', function (val1, val2) {
    return val1 <= val2;
  })
  Handlebars.registerHelper('and', function (val1, val2) {
    return val1 && val2;
  })
  Handlebars.registerHelper('or', function (val1, val2) {
    return val1 || val2;
  })

  Handlebars.registerHelper('or3', function (val1, val2, val3) {
    return val1 || val2 || val3;
  })

  Handlebars.registerHelper('for', function (from, to, incr, block) {
    let accum = '';
    for (let i = from; i < to; i += incr)
      accum += block.fn(i);
    return accum;
  })

  Handlebars.registerHelper('not', function (cond) {
    return !cond;
  })
  Handlebars.registerHelper('count', function (list) {
    return list.length;
  })
  Handlebars.registerHelper('countKeys', function (obj) {
    return Object.keys(obj).length;
  })

  Handlebars.registerHelper('isEnabled', function (configKey) {
    return game.settings.get("bol", configKey);
  })
  Handlebars.registerHelper('split', function (str, separator, keep) {
    return str.split(separator)[keep];
  })

  // If you need to add Handlebars helpers, here are a few useful examples:
  Handlebars.registerHelper('concat', function () {
    let outStr = '';
    for (let arg in arguments) {
      if (typeof arguments[arg] != 'object') {
        outStr += arguments[arg];
      }
    }
    return outStr;
  })

  Handlebars.registerHelper('add', function (a, b) {
    return parseInt(a) + parseInt(b);
  });
  Handlebars.registerHelper('mul', function (a, b) {
    return parseInt(a) * parseInt(b);
  })
  Handlebars.registerHelper('sub', function (a, b) {
    return parseInt(a) - parseInt(b);
  })
  Handlebars.registerHelper('abbrev2', function (a) {
    return a.substring(0, 2);
  })
  Handlebars.registerHelper('abbrev3', function (a) {
    return a.substring(0, 3);
  })
  Handlebars.registerHelper('valueAtIndex', function (arr, idx) {
    return arr[idx];
  })
  Handlebars.registerHelper('includesKey', function (items, type, key) {
    return items.filter(i => i.type === type).map(i => i.system.key).includes(key);
  })
  Handlebars.registerHelper('includes', function (array, val) {
    return array.includes(val);
  })
  Handlebars.registerHelper('eval', function (expr) {
    return eval(expr);
  })
  Handlebars.registerHelper('isOwnerOrGM', function (actor) {
    log("Testing actor", actor.isOwner, game.userId)
    return actor.isOwner || game.isGM;
  })
  Handlebars.registerHelper('upperCase', function (text) {
    if (typeof text !== 'string') return text
    return text.toUpperCase()
  })
  Handlebars.registerHelper('upperFirst', function (text) {
    if (typeof text !== 'string') return text
    return text.charAt(0).toUpperCase() + text.slice(1)
  })
  Handlebars.registerHelper('upperFirstOnly', function (text) {
    if (typeof text !== 'string') return text
    return text.charAt(0).toUpperCase()
  })

  // Handle v12 removal of this helper
  Handlebars.registerHelper('select', function (selected, options) {
    const escapedValue = RegExp.escape(Handlebars.escapeExpression(selected));
    const rgx = new RegExp(' value=[\"\']' + escapedValue + '[\"\']');
    const html = options.fn(this);
    return html.replace(rgx, "$& selected");
  });

}

export function getLethargyDice(level) {
  for (let s of SYSTEM.SPELL_LETHARGY_DICE) {
    if (Number(level) <= s.maxLevel) {
      return s.dice
    }
  }
}