import { loraDisplayName, normalizeLoraStack, type LoraStackItem } from '~/utils/loras'
import type { ImageV2Engine, ImageV2Mode, ImageV2Task } from '~/utils/imageV2'
import { isXaigenStudio, type VideoWorkflowId } from '~/utils/videoModels'

export type StillGenerationKind = 'image' | 'imagev2'

export type StillGenerationSettings = {
  kind: StillGenerationKind
  mode?: ImageV2Mode
  engine?: ImageV2Engine
  task?: ImageV2Task
  negative?: string
  snofsModel?: number
  snofsClip?: number
  consistencyModel?: number
  consistencyClip?: number
  steps?: number
  cfg?: number
  megapixels?: number
  turbo?: boolean
  strength?: number
  width?: number
  height?: number
  aspect?: string
  seed?: number
  scaleToTotalPixels?: boolean
  scaleMegapixels?: number
  loraName?: string
  loraStack?: LoraStackItem[]
  sourceStillId?: string
  referenceStillId?: string
}

export type SettingsRow = { label: string; value: string }

function finiteNumber(raw: unknown): number | undefined {
  const value = Number(raw)
  return Number.isFinite(value) ? value : undefined
}

function formatNum(raw: unknown, digits = 2) {
  const value = Number(raw)
  if (!Number.isFinite(value)) return ''
  const rounded = Number(value.toFixed(digits))
  return Number.isInteger(rounded) ? String(rounded) : String(rounded)
}

function formatPair(model?: number, clip?: number) {
  if (model == null && clip == null) return ''
  return `${formatNum(model ?? 0)} / ${formatNum(clip ?? 0)}`
}

function formatLoras(stack?: LoraStackItem[], name?: string) {
  const items = normalizeLoraStack(stack?.length ? stack : name)
  if (!items.length) return ''
  return items.map((item) => {
    const label = loraDisplayName(item.name)
    if (item.strengthModel === item.strengthClip) return `${label} ${formatNum(item.strengthModel)}`
    return `${label} ${formatNum(item.strengthModel)} / ${formatNum(item.strengthClip)}`
  }).join(', ')
}

export function normalizeStillSettings(raw: unknown): StillGenerationSettings | undefined {
  if (!raw || typeof raw !== 'object') return undefined
  const value = raw as Record<string, unknown>
  const mode = value.mode === 'compose' || value.mode === 'refine' || value.mode === 'generate' || value.mode === 'edit'
    ? value.mode
    : undefined
  const engine = value.engine === 'krea' || value.engine === 'flux' ? value.engine : undefined
  const kind: StillGenerationKind | undefined = value.kind === 'imagev2' || mode
    ? 'imagev2'
    : value.kind === 'image'
      ? 'image'
      : undefined
  if (!kind) return undefined
  const task = value.task === 'identity' || value.task === 'outfit' || value.task === 'face_lock' || value.task === 'refine' || value.task === 't2i' || value.task === 'scene'
    ? value.task
    : undefined
  const stack = normalizeLoraStack(value.loraStack || value.loraName)
  return {
    kind,
    mode,
    engine,
    task,
    negative: typeof value.negative === 'string' ? value.negative : undefined,
    snofsModel: finiteNumber(value.snofsModel),
    snofsClip: finiteNumber(value.snofsClip),
    consistencyModel: finiteNumber(value.consistencyModel),
    consistencyClip: finiteNumber(value.consistencyClip),
    steps: finiteNumber(value.steps),
    cfg: finiteNumber(value.cfg),
    megapixels: finiteNumber(value.megapixels),
    turbo: typeof value.turbo === 'boolean' ? value.turbo : undefined,
    strength: finiteNumber(value.strength),
    width: finiteNumber(value.width),
    height: finiteNumber(value.height),
    aspect: typeof value.aspect === 'string' ? value.aspect : undefined,
    seed: finiteNumber(value.seed),
    scaleToTotalPixels: typeof value.scaleToTotalPixels === 'boolean' ? value.scaleToTotalPixels : undefined,
    scaleMegapixels: finiteNumber(value.scaleMegapixels),
    loraName: typeof value.loraName === 'string' ? value.loraName : undefined,
    loraStack: stack.length ? stack : undefined,
    sourceStillId: typeof value.sourceStillId === 'string' ? value.sourceStillId : undefined,
    referenceStillId: typeof value.referenceStillId === 'string' ? value.referenceStillId : undefined
  }
}

export function inferStillPipeline(still: { filename?: string; settings?: StillGenerationSettings | null }) {
  if (still.settings?.kind === 'imagev2' || still.settings?.mode) return 'imagev2' as const
  if (still.settings?.kind === 'image') return 'image' as const
  if (/aigen_v2_/i.test(String(still.filename || ''))) return 'imagev2' as const
  if (/aigen[_-]?edit/i.test(String(still.filename || ''))) return 'image' as const
  return null
}

function composeTaskLabel(task?: ImageV2Task) {
  if (task === 'outfit') return 'Outfit'
  if (task === 'identity') return 'Identity'
  if (task === 'face_lock') return 'Face lock'
  if (task === 'scene') return 'Scene'
  return ''
}

export function stillModeLabel(still: { filename?: string; settings?: StillGenerationSettings | null }) {
  const settings = still.settings
  if (settings?.kind === 'imagev2' || settings?.mode) {
    const mode = settings.mode === 'generate'
      ? 'Generate'
      : settings.mode === 'compose'
        ? 'Compose'
        : settings.mode === 'refine'
          ? 'Refine'
          : 'Edit'
    const task = settings.mode === 'compose' ? composeTaskLabel(settings.task) : ''
    const engine = settings.engine === 'krea' ? 'Krea' : settings.engine === 'flux' ? 'Flux' : ''
    return [engine ? `Image v2 · ${mode} · ${engine}` : `Image v2 · ${mode}`, task].filter(Boolean).join(' · ')
  }
  if (settings?.kind === 'image') return 'Image edit'
  if (/aigen_v2_/i.test(String(still.filename || ''))) return 'Image v2'
  if (/aigen[_-]?edit/i.test(String(still.filename || ''))) return 'Image edit'
  return ''
}

export function stillSettingsRows(still: { prompt?: string; width?: number; height?: number; settings?: StillGenerationSettings | null }) {
  const settings = still.settings
  const rows: SettingsRow[] = []
  if (still.prompt?.trim()) rows.push({ label: 'Prompt', value: still.prompt.trim() })
  const mode = stillModeLabel(still)
  if (mode) rows.push({ label: 'Mode', value: mode })
  if (!settings) return rows
  if (settings.kind === 'imagev2') {
    if (settings.mode === 'generate' && settings.width && settings.height) {
      rows.push({ label: 'Size', value: `${settings.width}×${settings.height}` })
    } else if (settings.aspect && settings.aspect !== 'auto') {
      rows.push({ label: 'Aspect', value: `${settings.aspect} fill` })
    } else if (still.width && still.height) {
      rows.push({ label: 'Output', value: `${still.width}×${still.height}` })
    }
    if (settings.engine) {
      rows.push({ label: 'Engine', value: settings.engine === 'krea' ? 'Krea' : 'Flux' })
    }
    if (isXaigenStudio() && (settings.snofsModel != null || settings.snofsClip != null)) {
      rows.push({ label: 'Concept LoRA', value: formatPair(settings.snofsModel, settings.snofsClip) })
    }
    if (settings.mode !== 'generate' && (settings.consistencyModel != null || settings.consistencyClip != null)) {
      rows.push({ label: 'Consistency', value: formatPair(settings.consistencyModel, settings.consistencyClip) })
    }
    const loras = formatLoras(settings.loraStack, settings.loraName)
    if (loras) rows.push({ label: 'LoRA', value: loras })
    if (settings.mode === 'refine' && settings.strength != null) {
      rows.push({ label: 'Strength', value: formatNum(settings.strength) })
    }
    if (settings.mode !== 'generate' && settings.scaleToTotalPixels !== false && settings.megapixels != null && settings.megapixels > 0) {
      rows.push({ label: 'Scale to MP', value: formatNum(settings.megapixels) })
    }
  } else {
    if (still.width && still.height) rows.push({ label: 'Output', value: `${still.width}×${still.height}` })
    if (settings.aspect && settings.aspect !== 'auto') {
      rows.push({ label: 'Aspect', value: `${settings.aspect} fill` })
    }
    if (settings.scaleToTotalPixels) {
      rows.push({ label: 'Scale to MP', value: formatNum(settings.scaleMegapixels ?? 1) })
    }
    const loras = formatLoras(settings.loraStack, settings.loraName)
    if (loras) rows.push({ label: 'LoRA', value: loras })
  }
  if (settings.steps != null) rows.push({ label: 'Steps', value: String(Math.round(settings.steps)) })
  if (settings.cfg != null) rows.push({ label: 'CFG', value: formatNum(settings.cfg) })
  if (settings.seed != null) rows.push({ label: 'Seed', value: String(Math.round(settings.seed)) })
  if (settings.turbo === true) rows.push({ label: 'Turbo', value: 'On' })
  if (settings.negative?.trim()) rows.push({ label: 'Negative', value: settings.negative.trim() })
  return rows
}

function videoWorkflowLabel(workflow?: string) {
  if (workflow === 'v2') return 'MiniMax I2V v2'
  if (workflow === 't2v') return 'MiniMax T2V'
  if (workflow === 'ltx') return 'LTX Pink Cherry'
  if (workflow === 'ltx-t2v') return 'LTX T2V'
  if (workflow === 'v1') return 'MiniMax I2V'
  return workflow || ''
}

export function clipSettingsRows(clip: {
  prompt?: string
  width?: number
  height?: number
  duration?: number
  steps?: number
  turbo?: boolean
  seed?: number
  cfg?: number
  fps?: number
  samplerName?: string
  scheduler?: string
  aspect?: string
  sound?: boolean
  workflow?: VideoWorkflowId | string
  loraName?: string
  loraStack?: LoraStackItem[]
}) {
  const rows: SettingsRow[] = []
  if (clip.prompt?.trim()) rows.push({ label: 'Prompt', value: clip.prompt.trim() })
  const workflow = videoWorkflowLabel(clip.workflow)
  if (workflow) rows.push({ label: 'Workflow', value: workflow })
  if (clip.width && clip.height) rows.push({ label: 'Size', value: `${clip.width}×${clip.height}` })
  if (clip.aspect && clip.aspect !== 'auto') rows.push({ label: 'Aspect', value: clip.aspect })
  if (typeof clip.duration === 'number' && clip.duration > 0) {
    const rounded = Math.round(clip.duration * 10) / 10
    rows.push({ label: 'Duration', value: Number.isInteger(rounded) ? `${rounded}s` : `${rounded.toFixed(1)}s` })
  }
  if (clip.steps != null) {
    rows.push({ label: 'Steps', value: clip.turbo ? `${clip.steps} · Turbo` : String(clip.steps) })
  } else if (clip.turbo) {
    rows.push({ label: 'Turbo', value: 'On' })
  }
  if (clip.cfg != null) rows.push({ label: 'CFG', value: formatNum(clip.cfg) })
  if (clip.fps != null) rows.push({ label: 'FPS', value: String(clip.fps) })
  if (clip.samplerName) rows.push({ label: 'Sampler', value: clip.samplerName })
  if (clip.scheduler) rows.push({ label: 'Scheduler', value: clip.scheduler })
  if (typeof clip.sound === 'boolean') rows.push({ label: 'Sound', value: clip.sound ? 'On' : 'Off' })
  if (clip.seed != null) rows.push({ label: 'Seed', value: String(clip.seed) })
  const loras = formatLoras(clip.loraStack, clip.loraName)
  if (loras) rows.push({ label: 'LoRA', value: loras })
  return rows
}