import { SYSTEM } from "./module/config/system.mjs"
globalThis.SYSTEM = SYSTEM

import * as models from "./module/models/_module.mjs"
import * as documents from "./module/documents/_module.mjs"
import * as applications from "./module/applications/_module.mjs"
import { SystemManager } from "./module/applications/hud/system-manager.js"
import { MODULE, REQUIRED_CORE_MODULE_VERSION } from "./module/applications/hud/constants.js"

Hooks.once("init", async function () {
  console.info("Adventures with Emmy | Initializing System")
  console.info(SYSTEM.ASCII)

  // Load trait tooltip descriptions from external JSON
  try {
    const resp = await fetch("systems/fvtt-adventures-with-emmy/module/config/trait-descriptions.json")
    const data = await resp.json()
    // Strip the comment key and populate SYSTEM.TRAIT_DESCRIPTIONS in-place
    delete data["_comment"]
    Object.assign(SYSTEM.TRAIT_DESCRIPTIONS, data)
  } catch (err) {
    console.warn("Adventures with Emmy | Failed to load trait-descriptions.json", err)
  }

  globalThis.adventuresWithEmmy = game.system
  game.system.CONST = SYSTEM

  game.system.api = { applications, models, documents }

  CONFIG.Actor.documentClass = documents.AwEActor
  CONFIG.Actor.dataModels = {
    character: models.AwECharacter,
    creature: models.AwECreature
  }

  CONFIG.Item.documentClass = documents.AwEItem
  CONFIG.Item.dataModels = {
    ability: models.AwEAbility,
    field: models.AwEField,
    specialization: models.AwESpecialization,
    archetype: models.AwEArchetype,
    background: models.AwEBackground,
    kit: models.AwEKit,
    weapon: models.AwEWeapon,
    equipment: models.AwEEquipment
  }

  // Register actor sheets
  foundry.documents.collections.Actors.unregisterSheet("core", foundry.appv1.sheets.ActorSheet)
  foundry.documents.collections.Actors.registerSheet("fvtt-adventures-with-emmy", applications.AwECharacterSheet, {
    types: ["character"], makeDefault: true
  })
  foundry.documents.collections.Actors.registerSheet("fvtt-adventures-with-emmy", applications.AwECreatureSheet, {
    types: ["creature"], makeDefault: true
  })

  // Register item sheets
  foundry.documents.collections.Items.unregisterSheet("core", foundry.appv1.sheets.ItemSheet)
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEAbilitySheet, {
    types: ["ability"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEFieldSheet, {
    types: ["field"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwESpecializationSheet, {
    types: ["specialization"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEArchetypeSheet, {
    types: ["archetype"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEBackgroundSheet, {
    types: ["background"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEKitSheet, {
    types: ["kit"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEWeaponSheet, {
    types: ["weapon"], makeDefault: true
  })
  foundry.documents.collections.Items.registerSheet("fvtt-adventures-with-emmy", applications.AwEEquipmentSheet, {
    types: ["equipment"], makeDefault: true
  })

  CONFIG.ChatMessage.documentClass = documents.AwEChatMessage
  CONFIG.Dice.rolls.push(documents.AwERoll)
  CONFIG.Combatant.documentClass = documents.AwECombatant

  // Register conditions as status effects (token HUD overlays)
  CONFIG.statusEffects = Object.values(SYSTEM.CONDITIONS).map(c => ({
    id:   c.id,
    name: c.label,
    img:  `systems/fvtt-adventures-with-emmy/assets/conditions/${c.id}.svg`
  }))

  // Handlebars helpers
  Handlebars.registerHelper("abs", (value) => Math.abs(value ?? 0))
  Handlebars.registerHelper("traitTooltip", (traitName) => {
    const key = (traitName ?? "").toLowerCase()
    return SYSTEM.TRAIT_DESCRIPTIONS[key] ?? ""
  })
  /** Strip HTML tags and truncate item description for use as a data-tooltip value. */
  Handlebars.registerHelper("itemTooltip", (item) => {
    const raw = item?.system?.description ?? ""
    if (!raw) return ""
    const plain = raw.replace(/<[^>]*>/g, " ").replace(/\s+/g, " ").trim()
    return plain.length > 250 ? plain.slice(0, 247) + "…" : plain
  })
})

Hooks.once("ready", function () {
  console.info("Adventures with Emmy | System Ready")
})

// Token Action HUD Core integration (only fires if the module is active)
Hooks.on('tokenActionHudCoreApiReady', async () => {
  const module = {
    api: {
      requiredCoreModuleVersion: REQUIRED_CORE_MODULE_VERSION,
      SystemManager
    }
  }
  Hooks.call('tokenActionHudSystemReady', module)
})

// Chat message: "Roll Damage" button on weapon attack messages
Hooks.on('renderChatMessageHTML', (message, html) => {
  const btn = html.querySelector('.roll-damage-btn')
  if (!btn) return
  btn.addEventListener('click', async () => {
    const actorId = btn.dataset.actorId
    const actor = game.actors.get(actorId)
    if (!actor) return ui.notifications.warn('Actor not found')
    await actor.rollDamage({
      name: btn.dataset.itemName,
      img:  btn.dataset.itemImg,
      system: {
        damageFormula: btn.dataset.damageFormula,
        damageType:    btn.dataset.damageType
      }
    })
  })
})