import { ROLL_TYPE } from "../config/system.mjs"
import LethalFantasyUtils from "../utils.mjs"

export default class LethalFantasyRoll extends Roll {
  /**
   * The HTML template path used to render dice checks of this type
   * @type {string}
   */
  static CHAT_TEMPLATE = "systems/fvtt-lethal-fantasy/templates/chat-message.hbs"

  get type() {
    return this.options.type
  }

  get isChallenge() {
    return this.type === "challenge"
  }

  get isSave() {
    return this.type === ROLL_TYPE.SAVE
  }

  get isResource() {
    return this.type === ROLL_TYPE.RESOURCE
  }

  get isDamage() {
    return this.type === ROLL_TYPE.DAMAGE
  }

  get target() {
    return this.options.target
  }

  get value() {
    return this.options.value
  }

  get treshold() {
    return this.options.treshold
  }

  get actorId() {
    return this.options.actorId
  }

  get actorName() {
    return this.options.actorName
  }

  get actorImage() {
    return this.options.actorImage
  }

  get introText() {
    return this.options.introText
  }

  get introTextTooltip() {
    return this.options.introTextTooltip
  }

  get modifier() {
    return this.options.modifier
  }

  get resultType() {
    return this.options.resultType
  }

  get isFailure() {
    return this.resultType === "failure"
  }

  get hasTarget() {
    return this.options.hasTarget
  }

  get targetName() {
    return this.options.targetName
  }

  get targetArmor() {
    return this.options.targetArmor
  }

  get targetMalus() {
    return this.options.targetMalus
  }

  get realDamage() {
    return this.options.realDamage
  }

  get rollTotal() {
    return this.options.rollTotal
  }
  
  get diceResults() {
    return this.options.diceResults
  }

  get rollTarget() {
    return this.options.rollTarget
  }

  /**
   * Generates introductory text based on the roll type.
   *
   * @returns {string} The formatted introductory text for the roll.
   */
  _createIntroText() {
    let text

    switch (this.type) {
      case ROLL_TYPE.SAVE:
        const saveLabel = game.i18n.localize(`LETHALFANTASY.Character.FIELDS.caracteristiques.${this.target}.valeur.label`)
        text = game.i18n.format("LETHALFANTASY.Roll.save", { save: saveLabel })
        text = text.concat("<br>").concat(`Seuil : ${this.treshold}`)
        break
      case ROLL_TYPE.RESOURCE:
        const resourceLabel = game.i18n.localize(`LETHALFANTASY.Character.FIELDS.ressources.${this.target}.valeur.label`)
        text = game.i18n.format("LETHALFANTASY.Roll.resource", { resource: resourceLabel })
        break
      case ROLL_TYPE.DAMAGE:
        const damageLabel = this.target
        text = game.i18n.format("LETHALFANTASY.Roll.damage", { item: damageLabel })
        break
      case ROLL_TYPE.ATTACK:
        const attackLabel = this.target
        text = game.i18n.format("LETHALFANTASY.Roll.attack", { item: attackLabel })
        break
    }
    return text
  }

  /**
   * Generates an introductory text tooltip with characteristics and modifiers.
   *
   * @returns {string} A formatted string containing the value, help, hindrance, and modifier.
   */
  _createIntroTextTooltip() {
    let tooltip = game.i18n.format("LETHALFANTASY.Tooltip.saveIntroTextTooltip", { value: this.value, aide: this.aide, gene: this.gene, modificateur: this.modificateur })
    if (this.hasTarget) {
      tooltip = tooltip.concat(`<br>Cible : ${this.targetName}`)
    }
    return tooltip
  }

  /**
   * Prompt the user with a dialog to configure and execute a roll.
   *
   * @param {Object} options Configuration options for the roll.
   * @param {string} options.rollType The type of roll being performed (e.g., RESOURCE, DAMAGE, ATTACK, SAVE).
   * @param {string} options.rollValue The initial value or formula for the roll.
   * @param {string} options.rollTarget The target of the roll.
   * @param {"="|"+"|"++"|"-"|"--"} options.rollAdvantage If there is an avantage (+), a disadvantage (-), a double advantage (++), a double disadvantage (--) or a normal roll (=).
   * @param {string} options.actorId The ID of the actor performing the roll.
   * @param {string} options.actorName The name of the actor performing the roll.
   * @param {string} options.actorImage The image of the actor performing the roll.
   * @param {boolean} options.hasTarget Whether the roll has a target.
   * @param {Object} options.target The target of the roll, if any.
   * @param {Object} options.data Additional data for the roll.
   *
   * @returns {Promise<Object|null>} The roll result or null if the dialog was cancelled.
   */
  static async prompt(options = {}) {
    let dice = "1d20"
    let maxValue = 20
    let formula = "1d20"
    if (options.rollType === "challenge") {
      if ( options.rollTarget.rollKey === "dying") {
        dice = options.rollTarget.value
        maxValue = Number(options.rollTarget.value.match(/\d+/)[0])
        formula = `${dice}`
      } else {
        dice = "1d20"
        maxValue = 20
      }  
    }

    const rollModes = Object.fromEntries(Object.entries(CONFIG.Dice.rollModes).map(([key, value]) => [key, game.i18n.localize(value)]))
    const fieldRollMode = new foundry.data.fields.StringField({
      choices: rollModes,
      blank: false,
      default: "public",
    })

    const choiceModifier = {
      "-9": "-9",
      "-8": "-8",
      "-7": "-7",
      "-6": "-6",
      "-5": "-5",
      "-4": "-4",
      "-3": "-3",
      "-2": "-2",
      "-1": "-1",
      "+0": "0",
      "+1": "+1",
      "+2": "+2",
      "+3": "+3",
      "+4": "+4",
      "+5": "+5",
      "+6": "+6",
      "+7": "+7",
      "+8": "+8",
      "+9": "+9",
      "+10": "+10",
      "+11": "+11",
      "+12": "+12",
      "+13": "+13",
      "+14": "+14",
      "+15": "+15",
      "+16": "+16",
      "+17": "+17",
      "+18": "+18",
      "+19": "+19",
      "+20": "+20",
      "+21": "+21",
      "+22": "+22",
      "+23": "+23",
      "+24": "+24",
      "+25": "+25"
    }

    let modifier = "+0"
    let targetName

    let dialogContext = {
      isSave: options.rollType === "save",
      isChallenge: options.rollType === "challenge",
      rollTarget: options.rollTarget,
      rollModes,
      fieldRollMode,
      choiceModifier,
      formula,
      dice,
      hasTarget: options.hasTarget,
      modifier,
      targetName
    }
    const content = await renderTemplate("systems/fvtt-lethal-fantasy/templates/roll-dialog.hbs", dialogContext)

    const title = LethalFantasyRoll.createTitle(options.rollType, options.rollTarget)
    const label = game.i18n.localize("LETHALFANTASY.Roll.roll")
    const rollContext = await foundry.applications.api.DialogV2.wait({
      window: { title: title },
      classes: ["lethalfantasy"],
      content,
      buttons: [
        {
          label: label,
          callback: (event, button, dialog) => {
            const output = Array.from(button.form.elements).reduce((obj, input) => {
              if (input.name) obj[input.name] = input.value
              return obj
            }, {})
            return output
          },
        },
      ],
      rejectClose: false // Click on Close button will not launch an error
    })

    // If the user cancels the dialog, exit
    if (rollContext === null) return

    let treshold
    let fullModifier = 0
    if (options.rollType === "challenge") {
      let bonus = (options.rollTarget.rollKey === "dying") ? 0 : options.rollTarget.bonus
      fullModifier = rollContext.modifier === "" ? 0 : parseInt(rollContext.modifier, 10) + bonus
      if (fullModifier < 0) {
        let modAbs = Math.abs(fullModifier)
        formula = `${dice} - (d${modAbs + 1} - 1)`
      } else if (fullModifier > 0) {
        formula = `${dice} + (d${fullModifier + 1} - 1)`
      } else {
        formula = `${dice} + 1d0`
      }
    }

    const rollData = {
      type: options.rollType,
      target: options.rollTarget,
      actorId: options.actorId,
      actorName: options.actorName,
      actorImage: options.actorImage,
      rollMode: rollContext.visibility,
      hasTarget: options.hasTarget,
      targetName,
      ...rollContext,
    }

    /**
     * A hook event that fires before the roll is made.
     * @function 
     * @memberof hookEvents
     * @param {Object} options          Options for the roll.
     * @param {Object} rollData         All data related to the roll.
     * @returns {boolean}               Explicitly return `false` to prevent roll to be made.
     */
    if (Hooks.call("fvtt-lethal-fantasy.preRoll", options, rollData) === false) return

    const roll = new this(formula, options.data, rollData)
    await roll.evaluate()

    let rollTotal = -1
    let diceResults = []
    let resultType
    if (options.rollType === "challenge") {
      let d20result = roll.dice[0].results[0].result
      diceResults.push({ dice: `${dice}`, value: d20result})
      let d20sum = d20result
      while (d20result === maxValue) {
        let r = await new Roll(`${dice}`).evaluate()
        d20result = r.dice[0].results[0].result
        diceResults.push( {dice: `${dice}-1`, value: d20result-1})
        d20sum += (d20result - 1)
      }
      let minus1 = (fullModifier === 0) ? 0 : 1
      diceResults.push({ dice: `${roll.dice[1].formula}-${minus1}`, value: roll.dice[1].results[0].result - minus1 })
      rollTotal = Math.max(d20sum + roll.dice[1].results[0].result - minus1, 0)
    
    } else if (options.rollType === ROLL_TYPE.RESOURCE) {
      //resultType = roll.total === 1 || roll.total === 2 ? "failure" : "success"
    }

    roll.options.resultType = resultType
    roll.options.introText = roll._createIntroText()
    roll.options.introTextTooltip = roll._createIntroTextTooltip()
    roll.options.rollTotal = rollTotal
    roll.options.diceResults = diceResults
    roll.options.rollTarget = options.rollTarget

    /**
     * A hook event that fires after the roll has been made.
     * @function 
     * @memberof hookEvents
     * @param {Object} options          Options for the roll.
     * @param {Object} rollData         All data related to the roll.
      @param {LethalFantasyRoll} roll        The resulting roll.
     * @returns {boolean}               Explicitly return `false` to prevent roll to be made.
     */
    if (Hooks.call("fvtt-lethal-fantasy.Roll", options, rollData, roll) === false) return

    return roll
  }

  /**
   * Creates a title based on the given type.
   *
   * @param {string} type The type of the roll.
   * @param {string} target The target of the roll.
   * @returns {string} The generated title.
   */
  static createTitle(type, target) {
    switch (type) {
      case "challenge":
        return `${game.i18n.localize("LETHALFANTASY.Dialog.titleSave")} : ${game.i18n.localize(`LETHALFANTASY.Manager.${target}`)}`
      case ROLL_TYPE.RESOURCE:
        return `${game.i18n.localize("LETHALFANTASY.Dialog.titleResource")} : ${game.i18n.localize(`LETHALFANTASY.Manager.${target}`)}`
      case ROLL_TYPE.DAMAGE:
        return `${game.i18n.localize("LETHALFANTASY.Dialog.titleDamage")} : ${target}`
      case ROLL_TYPE.ATTACK:
        return `${game.i18n.localize("LETHALFANTASY.Dialog.titleAttack")} : ${target}`
      default:
        return game.i18n.localize("LETHALFANTASY.Dialog.titleStandard")
    }
  }

  /** @override */
  async render(chatOptions = {}) {
    let chatData = await this._getChatCardData(chatOptions.isPrivate)
    return await renderTemplate(this.constructor.CHAT_TEMPLATE, chatData)
  }

  /**
   * Generates the data required for rendering a roll chat card.
   *
   * @param {boolean} isPrivate Indicates if the chat card is private.
   * @returns {Promise<Object>} A promise that resolves to an object containing the chat card data.
   * @property {Array<string>} css - CSS classes for the chat card.
   * @property {Object} data - The data associated with the roll.
   * @property {number} diceTotal - The total value of the dice rolled.
   * @property {boolean} isGM - Indicates if the user is a Game Master.
   * @property {string} formula - The formula used for the roll.
   * @property {number} total - The total result of the roll.
   * @property {boolean} isSave - Indicates if the roll is a saving throw.
   * @property {boolean} isDamage - Indicates if the roll is for damage.
   * @property {boolean} isFailure - Indicates if the roll is a failure.
   * @property {string} actorId - The ID of the actor performing the roll.
   * @property {string} actingCharName - The name of the character performing the roll.
   * @property {string} actingCharImg - The image of the character performing the roll.
   * @property {string} introText - Introductory text for the roll.
   * @property {string} introTextTooltip - Tooltip for the introductory text.
   * @property {string} resultType - The type of result (e.g., success, failure).
   * @property {boolean} hasTarget - Indicates if the roll has a target.
   * @property {string} targetName - The name of the target.
   * @property {number} targetArmor - The armor value of the target.
   * @property {boolean} isPrivate - Indicates if the chat card is private.
   * @property {string} cssClass - The combined CSS classes as a single string.
   * @property {string} tooltip - The tooltip text for the chat card.
   */
  async _getChatCardData(isPrivate) {
    const cardData = {
      css: [SYSTEM.id, "dice-roll"],
      data: this.data,
      diceTotal: this.dice.reduce((t, d) => t + d.total, 0),
      isGM: game.user.isGM,
      formula: this.formula,
      rollType: this.type,
      rollTarget: this.rollTarget,
      total: this.rollTotal,
      isSave: this.isSave,
      isChallenge: this.isChallenge,
      isFailure: this.isFailure,
      actorId: this.actorId,
      diceResults: this.diceResults,
      actingCharName: this.actorName,
      actingCharImg: this.actorImage,
      introText: this.introText,
      introTextTooltip: this.introTextTooltip,
      resultType: this.resultType,
      hasTarget: this.hasTarget,
      targetName: this.targetName,
      targetArmor: this.targetArmor,
      isPrivate: isPrivate
    }
    cardData.cssClass = cardData.css.join(" ")
    cardData.tooltip = isPrivate ? "" : await this.getTooltip()
    return cardData
  }

  /**
   * Converts the roll result to a chat message.
   *
   * @param {Object} [messageData={}] Additional data to include in the message.
   * @param {Object} options Options for message creation.
   * @param {string} options.rollMode The mode of the roll (e.g., public, private).
   * @param {boolean} [options.create=true] Whether to create the message.
   * @returns {Promise} - A promise that resolves when the message is created.
   */
  async toMessage(messageData = {}, { rollMode, create = true } = {}) {
    super.toMessage(
      {
        isSave: this.isSave,
        isChallenge: this.isChallenge,
        isFailure: this.resultType === "failure",
        introText: this.introText,
        rollType: this.type,
        rollTarget: this.rollTarget,
        introTextTooltip: this.introTextTooltip,
        actingCharName: this.actorName,
        actingCharImg: this.actorImage,
        hasTarget: this.hasTarget,
        targetName: this.targetName,
        targetArmor: this.targetArmor,
        targetMalus: this.targetMalus,
        realDamage: this.realDamage,
        ...messageData,
      },
      { rollMode: rollMode },
    )
  }

}