import { CONST, log, shim } from './shim.js'

class PowerEffect {
  constructor (token, targets) {
    this.token = token
    this.targets = targets
    this.effectDocs = []
    this.menuData = {
      inputs: [
        { type: 'header', label: `${this.name} Effect` },
        { type: 'info', label: `Apply ${this.name} Effect` },
        { type: 'header', label: 'Global Modifiers' },
        { type: 'checkbox', label: 'Glow (+1)' },
        { type: 'checkbox', label: 'Shroud (+1)' },
        { type: 'checkbox', label: 'Hinder (+1)' },
        { type: 'checkbox', label: 'Hurry (+1)' },
        { type: 'header', label: '---------------' }
      ],
      buttons: [
        { label: 'Apply', value: 'apply' },
        { label: 'Apply with Raise', value: 'raise' },
        { label: 'Cancel', value: 'cancel' }
      ]
    }
    this.menuOptions = {
      title: `${this.name} Effect`,
      defaultButton: 'Cancel',
      options: {}
    }
    this.inputs = []
    this.buttons = null
  }

  get name () {
    return 'Unknown Power'
  }

  get durationRounds () {
    return 5
  }

  async powerEffect () {
    try {
      await this.prepMenu()
    } catch (e) {
      log('Error preparing menu for power effect: ' + e.toString())
      return
    }
    const { buttons, inputs } = await shim.warpgateMenu(
      this.menuData, this.menuOptions)
    this.buttons = buttons
    this.inputs = inputs
    if (this.buttons && this.buttons !== 'cancel') {
      this.globalModifierEffects()
      await this.prepResult()
      await this.applyResult()
    }
  }

  async prepResult () {
  }

  async applyResult () {
    for (const target of this.targets) {
      shim.applyActiveEffects(target, this.effectDocs)
    }
  }

  static modEffectDoc (icon, name, key, value, durationRounds) {
    return shim.createEffectDocument(icon, name, durationRounds, [
      {
        key,
        mode: CONST.FOUNDRY.ACTIVE_EFFECT_MODES.ADD,
        value,
        priority: 0
      }
    ])
  }

  static glow (durationRounds) {
    return PowerEffect.modEffectDoc(
      'icons/magic/light/orb-shadow-blue.webp',
      'Glow', '@Skill{Stealth}[system.die.modifier]', -2, durationRounds)
  }

  static shroud (durationRounds) {
    return PowerEffect.modEffectDoc(
      'icons/magic/perception/shadow-stealth-eyes-purple.webp',
      'Shroud', '@Skill{Stealth}[system.die.modifier]', 1, durationRounds)
  }

  static hinder (durationRounds) {
    return PowerEffect.modEffectDoc(
      'icons/magic/control/debuff-chains-shackle-movement-red.webp',
      'Hinder', 'system.stats.speed.value', -2, durationRounds)
  }

  static hurry (durationRounds) {
    return PowerEffect.modEffectDoc(
      'icons/skills/movement/feet-winged-sandals-tan.webp',
      'Hurry', 'system.stats.speed.value', 2, durationRounds)
  }

  globalModifierEffects () {
    this.inputIndex = 8
    if (this.inputs[3]) { // glow
      this.effectDocs.push(PowerEffect.glow(this.durationRounds))
    }
    if (this.inputs[4]) { // shroud
      this.effectDocs.push(PowerEffect.shroud(this.durationRounds))
    }
    if (this.inputs[5]) { // hinder
      this.effectDocs.push(PowerEffect.hinder(this.durationRounds))
    }
    if (this.inputs[6]) { // hurry
      this.effectDocs.push(PowerEffect.hurry(this.durationRounds))
    }
  }
}

class TargetedPowerEffect extends PowerEffect {
  constructor (token, targets) {
    super(token, targets)
    const targetList = this.targets.map(t => t.name).join(', ')
    this.menuData.inputs[1] = {
      type: 'info',
      label: `Apply ${this.name} Effect to ${targetList}`
    }
  }

  async powerEffect () {
    if (this.targets.length < 1) {
      shim.notifications.error(`No target selected for ${this.name}`)
      return
    }
    super.powerEffect()
  }
}

class BlindEffect extends TargetedPowerEffect {
  async prepMenu (token, targets) {
    this.menuData.inputs.push({
      type: 'checkbox',
      label: 'Strong (+1 point)',
      options: false
    })
  }

  get name () {
    return 'Blind'
  }

  get durationRounds () {
    return 1
  }

  async prepResult () {
    const raise = (this.buttons === 'raise')
    const strong = !!this.inputs[this.inputIndex]
    const icon = 'icons/skills/wounds/injury-eyes-blood-red.webp'
    const changes = [
      {
        key: 'system.stats.globalMods.trait',
        mode: CONST.FOUNDRY.ACTIVE_EFFECT_MODES.ADD,
        value: '-2',
        priority: 0
      }
    ]
    this.effectDocs.push(
      shim.createEffectDocument(
        icon, `minor Blindness (Vigor ${strong ? '-2 ' : ''}ends)`,
        this.durationRounds, changes))
    if (raise) {
      this.effectDocs.push(
        shim.createEffectDocument(
          icon, `major Blindness (Vigor ${strong ? '-2 ' : ''}ends)`,
          this.durationRounds, changes)
      )
    }
  }
}

class BoostLowerTraitEffect extends TargetedPowerEffect {
  get name () {
    return 'Boost/Lower Trait'
  }

  get durationRounds () {
    if (!this.inputs) {
      return 1
    }
    if (this.inputs[this.inputs.length - 4]) { // Boost
      return 5
    }
    return 1 // Lower
  }

  async prepMenu () {
    let traitOptions = ['Agility', 'Smarts', 'Spirit', 'Strength', 'Vigor']
    const allSkills = []
    const traits = {}
    for (const traitName of traitOptions) {
      const lower = traitName.toLowerCase()
      traits[traitName] = {
        name: traitName,
        type: 'attribute',
        modkey: `system.attributes.${lower}.die.modifier`,
        diekey: `system.attributes.${lower}.die.sides`
      }
    }
    for (const token of this.targets) {
      const skills = token.actor.items.filter(item => item.type === 'skill')
      for (const skill of skills) {
        const name = skill.name
        traits[name] = {
          name,
          type: 'skill',
          modkey: `@Skill{${name}}[system.die.modifier]`,
          diekey: `@Skill{${name}}[system.die.sides]`
        }
        if (name !== 'Unskilled' && !allSkills.find(v => v === name)) {
          allSkills.push(name)
        }
      }
      traitOptions = traitOptions.concat(allSkills.sort())
    }
    this.menuData.inputs = this.menuData.inputs.concat(
      { type: 'select', label: 'Trait', options: traitOptions },
      { type: 'info', label: 'Boost or Lower?' },
      { type: 'radio', label: 'Boost', options: ['isBoost', true] },
      { type: 'radio', label: 'Lower', options: ['isBoost', false] },
      { type: 'checkbox', label: 'Greater', options: false },
      { type: 'checkbox', label: 'Strong (lower only)', options: false }
    )
    this.traits = traits
  }

  async prepResult () {
    const raise = (this.buttons === 'raise')
    const direction = this.inputs[this.inputs.length - 4] ? 'Boost' : 'Lower'
    const durationRounds = (direction === 'Boost' ? 5 : 1)
    const icon = (direction === 'Boost'
      ? 'icons/magic/life/cross-embers-glow-yellow-purple.webp'
      : 'icons/magic/movement/chevrons-down-yellow.webp')
    const trait = this.traits[this.inputs[this.inputIndex]]
    const greater = !!this.inputs[this.inputIndex + 4]
    const strong = !!this.inputs[this.inputIndex + 5]

    let namePart = `${direction} ${trait.name}`
    const mods = []
    if (direction === 'Lower') {
      mods.push(`Spirit${strong ? '-2' : ''} ends`)
    }
    if (greater) {
      mods.push('greater')
    }
    if (mods.length > 0) {
      namePart = `${namePart} (${mods.join(', ')})`
    }
    const mode = CONST.FOUNDRY.ACTIVE_EFFECT_MODES.ADD
    const modValue = (direction === 'Boost' ? '+2' : '-2')
    const minorEffect = shim.createEffectDocument(
      icon, `minor ${namePart}`, durationRounds, [
        { key: trait.diekey, mode, value: modValue, priority: 0 }
      ])
    if (direction === 'Lower' && greater) {
      minorEffect.changes.push({ key: trait.modkey, mode, value: modValue, priority: 0 })
    }
    const majorEffect = shim.createEffectDocument(
      icon, `major ${namePart}`, durationRounds, [
        { key: trait.diekey, mode, value: modValue, priority: 0 }
      ])
    this.effectDocs.push(minorEffect)
    if (raise) { this.effectDocs.push(majorEffect) }
  }
}

class ConfusionEffect extends TargetedPowerEffect {
  get name () {
    return 'Confusion'
  }

  get durationRounds () {
    return 1
  }

  async prepMenu () {
    this.menuData.inputs.push(
      { type: 'checkbox', label: 'Greater (adds Shaken)', options: false })
    this.menuData.buttons = [
      { label: 'Distracted', value: 'distracted' },
      { label: 'Vulnerable', value: 'vulnerable' },
      { label: 'Raise (both)', value: 'raise' },
      { label: 'Cancel', value: 'cancel' }
    ]
  }

  async prepResult () {
    const greater = !!this.inputs[this.inputIndex]
    if (this.buttons === 'distracted' || this.buttons === 'raise') {
      this.effectDocs.push(shim.getStatus('SWADE.Distr', 'Distracted'))
    }
    if (this.buttons === 'vulnerable' || this.buttons === 'raise') {
      this.effectDocs.push(shim.getStatus('SWADE.Vuln', 'Vulnerable'))
    }
    if (greater) {
      this.effectDocs.push(shim.getStatus('SWADE.Shaken', 'Shaken'))
    }
  }
}

class DeflectionEffect extends TargetedPowerEffect {
  get name () {
    return 'Deflection'
  }

  get durationRounds () {
    return 5
  }

  async prepMenu () {
    this.menuData.buttons = [
      { label: 'Melee', value: 'melee' },
      { label: 'Ranged', value: 'ranged' },
      { label: 'Raise (both)', value: 'raise' },
      { label: 'Cancel', value: 'cancel' }
    ]
  }

  async prepResult () {
    const effectName = `Deflection (${this.buttons === 'raise' ? 'all' : this.buttons})`
    const icon = 'icons/magic/defensive/shield-barrier-deflect-teal.webp'
    this.effectDocs.push(shim.createEffectDocument(icon, effectName, this.durationRounds))
  }
}

class EntangleEffect extends TargetedPowerEffect {
  get name () {
    return 'Entangle'
  }

  get durationRounds () {
    return 1
  }

  async prepMenu () {
    this.menuData.inputs = this.menuData.inputs.concat([
      { type: 'radio', label: 'Not Damaging', options: ['dmg', true] },
      { type: 'radio', label: 'Damaging', options: ['dmg', false] },
      { type: 'radio', label: 'Deadly', options: ['dmg', false] },
      { type: 'checkbox', label: 'Tough', options: false }
    ])
    this.menuData.buttons = [
      { label: 'Entangled', value: 'apply' },
      { label: 'Bound (raise)', value: 'raise' },
      { label: 'Cancel', value: 'cancel' }
    ]
  }

  async prepResult () {
    const damage = (this.inputs[this.inputIndex + 1]
      ? '2d4'
      : (this.inputs[this.inputIndex + 2] ? '2d6' : null))
    const tough = !!this.inputs[this.inputIndex + 3]
    const effectSearch = (this.buttons === 'raise' ? 'SWADE.Bound' : 'SWADE.Entangled')
    const effectName = (this.buttons === 'raise' ? 'Bound' : 'Entangled')
    const effect = shim.getStatus(effectSearch, effectName)
    const extraIcon = 'icons/magic/nature/root-vine-barrier-wall-brown.webp'
    const extraEffect = shim.createEffectDocument(extraIcon,
      'Entangle Modifier', this.durationRounds, [])
    if (damage) {
      extraEffect.name = `${extraEffect.name} - ${damage} dmg`
    }
    if (tough) {
      extraEffect.name = `Tough ${extraEffect.name}`
    }
    this.effectDocs.push(effect)
    if (damage || tough) {
      this.effectDocs.push(extraEffect)
    }
  }
}

class IntangibilityEffect extends TargetedPowerEffect {
  get name () {
    return 'Intangility'
  }

  get durationRounds () {
    if (!this.inputs) {
      return 5
    }
    if (this.inputs[this.inputs.length - 1]) { // Duration
      return 50
    }
    return 5 // no duration
  }

  async prepMenu () {
    this.menuData.inputs.push({ type: 'checkbox', label: 'Duration', options: false })
    this.menuData.buttons = [
      { label: 'Apply', value: 'apply' },
      { label: 'Cancel', value: 'cancel' }
    ]
  }

  async prepResult () {
    const icon = 'icons/magic/control/debuff-energy-hold-levitate-blue-yellow.webp'
    const effect = shim.createEffectDocument(icon, this.name, this.durationRounds, [])
    this.effectDocs.push(effect)
  }
}

class InvisibilityEffect extends TargetedPowerEffect {
  get name () {
    return 'Invisiblity'
  }

  get durationRounds () {
    if (!this.inputs) {
      return 5
    }
    if (this.inputs[this.inputs.length - 1]) { // Duration
      return 50
    }
    return 5 // no duration
  }

  async prepMenu () {
    this.menuData.inputs.push({ type: 'checkbox', label: 'Duration', options: false })
  }

  async prepResult () {
    const effect = shim.getStatus('EFFECT.StatusInvisible', 'Invisible')
    effect.duration = { rounds: this.durationRounds }
    this.effectDocs.push(effect)
  }
}

class ProtectionEffect extends TargetedPowerEffect {
  get name () {
    return 'Protection'
  }

  get durationRounds () {
    return 5
  }

  async prepMenu () {
    this.menuData.buttons = [
      { label: 'Apply (+2 armor)', value: 'apply' },
      { label: 'Apply with raise (+2 toughness)', value: 'raise' },
      { label: 'Cancel', value: 'cancel' }
    ]
  }

  async prepResult () {
    const effect = shim.getStatus('SWADE.Protection', 'Protection')
    effect.duration = { rounds: this.durationRounds }
    const mode = CONST.FOUNDRY.ACTIVE_EFFECT_MODES.ADD
    effect.changes = [
      { key: 'system.stats.toughness.armor', mode, value: 2, priority: 0 }
    ]
    if (this.buttons === 'raise') {
      effect.changes[0].key = 'system.stats.toughness.value'
    }
    this.effectDocs.push(effect)
  }
}

class SmiteEffect extends TargetedPowerEffect {
  get name () {
    return 'Smite'
  }

  get durationRounds () {
    return 5
  }

  async prepMenu () {
    this.menuData.inputs.push({
      type: 'checkbox', label: 'Greater', options: false
    })
    const tokenWeapons = {}
    let index = this.menuData.inputs.length - 1
    for (const token of this.targets) {
      index += 2
      tokenWeapons[token.id] = index
      this.menuData.inputs.push({ type: 'info', label: `<h2>${token.name}</h2>` })
      const weapons = token.actor.items.filter(i => i.type === 'weapon').map(
        i => { return { value: i.name, html: i.name } })
      weapons.unshift({ value: '', html: '<i>None</i>' })
      this.menuData.inputs.push({ type: 'select', label: token.name, options: weapons })
    }
    this.tokenWeapons = tokenWeapons
  }

  async prepResult () {
    this.baseEffect = shim.getStatus('SWADE.Smite', 'Smite')
  }

  async applyResult () {
    const mode = CONST.FOUNDRY.ACTIVE_EFFECT_MODES.ADD
    const raise = (this.buttons === 'raise')
    const greater = !!this.inputs[this.inputIndex]
    const changeValue = (greater ? (raise ? '+6' : '+4') : (raise ? '+4' : '+2'))
    for (const token of this.targets) {
      const weaponName = this.inputs[this.tokenWeapons[token.id]]
      const weaponId = token.actor.items.getName(weaponName)?.id
      const changeKey = `@Weapon{${weaponName}}[system.actions.dmgMod]`
      if (!weaponId) {
        continue
      }
      const effectName = `${this.buttons === 'raise' ? 'major' : 'minor'} Smite${greater ? ' (greater)' : ''} (${weaponName})`
      const changes = [
        { key: changeKey, mode, value: changeValue, priority: 0 }
      ]
      this.baseEffect.changes = changes
      this.baseEffect.name = effectName
      console.log(token, weaponName, weaponId, effectName, changeKey)
      await shim.applyActiveEffects(token, [this.baseEffect].concat(this.effectDocs))
    }
  }
}

class SummonEffect extends PowerEffect {
  ICON = 'icons/magic/symbols/runes-triangle-blue.webp'

  get actorFolder () {
    return 'Summonables'
  }

  get name () {
    return 'Summon Creature'
  }

  get durationRounds () {
    return 5
  }

  async prepFolders () {
    const folders = []
    const folderNames = [
      this.actorFolder,
      `${this.actorFolder} - Default`,
      `${this.actorFolder}/Default`,
      `${this.actorFolder} - ${this.token.name}`,
      `${this.actorFolder} - ${this.token.actor.name}`,
      `${this.actorFolder}/${this.token.name}`,
      `${this.actorFolder}/${this.token.actor.name}`
    ]
    for (const folderName of folderNames) {
      const folder = shim.getActorFolderByPath(folderName)
      if (folder) {
        log(`Found actor folder ${folderName}`)
        folders.push(folder)
      }
    }
    if (folders.length > 1) {
      folders.shift()
    }
    return folders
  }

  async prepActors () {
    const folders = await this.prepFolders()
    const actors = {}
    for (const folder of folders) {
      const folderActors = shim.getActorsInFolder(folder)
      for (const key in folderActors) {
        actors[key] = folderActors[key]
      }
    }
    return actors
  }

  async prepMenu () {
    this.menuData.inputs[1].label = `${this.token.name} is summoning...`
    const actors = await this.prepActors()
    if (Object.keys(actors).length < 1) {
      shim.notifications.error('No summonables found')
      throw new Error('No summonables found')
    }

    function actorData (key) {
      return {
        value: actors[key].id,
        html: key
      }
    }

    this.summonableActors = actors

    this.menuData.inputs.push({
      type: 'select',
      label: 'Creature to summon',
      options: Object.keys(actors).filter(
        k => !k.includes('_template')).sort().map(actorData)
    })
    this.menuData.inputs.push({
      type: 'number',
      label: 'Number to spawn (+half base cost per)',
      options: 1
    })
  }

  async prepResult () {
    this.raise = (this.buttons === 'raise')
    this.actorId = (this.inputs[this.inputIndex])
    this.number = (this.inputs[this.inputIndex + 1])
    this.actor = shim.actors.get(this.actorId)
    this.icon = this.actor.prototypeToken.texture.src
    this.protoDoc = await this.actor.getTokenDocument()
    this.spawnOptions = {
      controllingActor: this.token.actor,
      duplicates: this.number,
      crosshairs: {
        icon: this.icon,
        label: `Summon ${this.actor.name}`,
        drawOutline: true,
        rememberControlled: true
      }
    }
    this.spawnMutation = {
      actor: {
        name: `${this.token.name}'s ${this.actor.name}`
      },
      token: {
        actorLink: false,
        name: `${this.token.name}'s ${this.protoDoc.name}`
      },
      embedded: { ActiveEffect: {}, Item: {} }
    }
    if (this.raise && ('raise_template' in this.summonableActors)) {
      const raiseTemplate = this.summonableActors.raise_template
      for (const item of raiseTemplate.items) {
        const raiseItemDoc = await raiseTemplate.getEmbeddedDocument('Item', item.id)
        this.spawnMutation.embedded.Item[item.name] = raiseItemDoc
      }
    }

    for (const effectDocument of this.effectDocs) {
      this.spawnMutation.embedded.ActiveEffect[effectDocument.name] = effectDocument
    }
  }

  async applyResult () {
    await shim.warpgateSpawn(this.protoDoc, this.spawnMutation, {}, this.spawnOptions)
  }
}

class SummonAllyEffect extends SummonEffect {
  get name () {
    return 'Summon Ally'
  }

  get actorFolder () {
    return `${super.actorFolder}/Summon Ally`
  }
}

const PowerClasses = {
  blind: BlindEffect,
  'boost/lower trait': BoostLowerTraitEffect,
  'boost trait': BoostLowerTraitEffect,
  confusion: ConfusionEffect,
  deflection: DeflectionEffect,
  entangle: EntangleEffect,
  intangibility: IntangibilityEffect,
  invisibility: InvisibilityEffect,
  'lower trait': BoostLowerTraitEffect,
  protection: ProtectionEffect,
  smite: SmiteEffect,
  'summon ally': SummonAllyEffect
}

export async function powerEffects (options = {}) {
  const token = 'token' in options ? options.token : []
  const targets = 'targets' in options ? Array.from(options.targets) : []
  const item = 'item' in options ? options.item : null
  const name = 'name' in options ? options.name : (item !== null ? item.name : null)

  const lcName = name.toLowerCase()
  for (const name in PowerClasses) {
    if (lcName.includes(name)) {
      const runner = new PowerClasses[name](token, targets)
      runner.powerEffect()
      return
    }
  }
  shim.notifications.error(`No power effect found for ${name}`)
}