import { randomUUID } from 'node:crypto'
import { readFile } from 'node:fs/promises'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import type { CaseDocument, CaseState, ClaimExhibit, PartyKind, SourceFileType } from '../src/types.js'

type MysteryDocument = {
  key: string
  title: string
  fileType: SourceFileType
  publishedAt: string
  body?: string[]
  metadata?: Record<string, string>
  asset?: string
  requiredFlags?: string[]
}
type MysteryGraph = {
  entry: string
  nodes: { key: string; type: 'cutscene' | 'dialogue' | 'level' | 'det_gate' | 'llm_gate'; label?: string; x: number; y: number
    componentKey?: string; templateSlug?: string; version?: number
    terminals?: { key: string; label?: string; to?: string | null }[]
    utterances?: { npc?: string; pose?: string; text: string; utterer?: 'npc' | 'player' }[] }[]
}
type MysteryNarrative = {
  cast: { key: string; name: string; role?: string; defaultPose?: string; poses?: { poseKey: string; assetId: string }[] }[]
  graph?: MysteryGraph
}
type MysteryGoal = {
  key:string; title:string; instructions?:string; completionMessage?:string; enabled?:boolean; requiredFlags:string[]
}
type MysteryEvidenceMatchRule = {
  name:string; sourceLabel?:string; sourceUri?:string; flagKey:string; minimumAnchorMatches?:number; enabled?:boolean
  anchors:{ phrase:string; minimumSimilarity?:number }[]
}
type MysterySemanticRule = {
  goalKey:string; name:string; targetSubject:string; relatedSubject?:string; assertion:string; successFlagKey:string
  relatedFlagKey?:string; minimumConfidence?:number; evaluatorVersion?:string; enabled?:boolean
}
type MysteryManifest = {
  slug: string
  name: string
  title: string
  subtitle: string
  timelineRange?: { start: string; end: string }
  brief: { body: string; concepts: { label: string; context: string; expectedPartyKind: PartyKind }[] }
  documents: MysteryDocument[]
  folders: { key: string; title: string; content: string; x: number; y: number; width: number; members: string[] }[]
  claims?: { key:string;statement:string;x:number;y:number;width?:number;height?:number }[]
  report?: { title?:string;requiredForCompletion?:boolean }
  goals?: MysteryGoal[]
  evidenceMatchRules?: MysteryEvidenceMatchRule[]
  evidenceSemanticRules?: MysterySemanticRule[]
  narrative?: MysteryNarrative
}

function requireOk(response: Response, action: string) {
  if (response.ok) return response
  return response.text().then(body => { throw new Error(`${action} failed (${response.status}): ${body}`) })
}

const MIME_BY_EXT: Record<string, string> = {
  png: 'image/png', jpg: 'image/jpeg', jpeg: 'image/jpeg', gif: 'image/gif', webp: 'image/webp', svg: 'image/svg+xml',
  pdf: 'application/pdf', mp3: 'audio/mpeg', wav: 'audio/wav', ogg: 'audio/ogg', m4a: 'audio/mp4', txt: 'text/plain',
}
function mimeFor(filename: string) { return MIME_BY_EXT[filename.split('.').pop()?.toLowerCase() || ''] || 'application/octet-stream' }

async function uploadAsset(baseUrl: string, levelId: string, manifestDir: string, document: MysteryDocument, authorization?: string) {
  if (!document.asset) return undefined
  const assetPath = path.resolve(manifestDir, document.asset)
  const filename = path.basename(assetPath)
  const form = new FormData()
  form.append('file', new Blob([await readFile(assetPath)], { type: mimeFor(filename) }), filename)
  const response = await requireOk(await fetch(`${baseUrl}/api/levels/${levelId}/documents?edit=1`, { method: 'POST', headers: authorization ? { authorization } : undefined, body: form }), `Upload ${document.asset}`)
  return await response.json() as CaseDocument
}

export async function importMysteryTemplate(manifestPath: string, baseUrl = 'http://localhost:8787', adminJwt = process.env.OSINT_ADMIN_JWT) {
  const absoluteManifest = path.resolve(manifestPath)
  const manifest = JSON.parse(await readFile(absoluteManifest, 'utf8')) as MysteryManifest
  const manifestDir = path.dirname(absoluteManifest)
  const authoringId = `${manifest.slug}-authoring-${Date.now()}`
  const authorization = adminJwt ? `Bearer ${adminJwt}` : undefined
  const headers = { 'content-type': 'application/json', ...(authorization ? { authorization } : {}) }
  const createdResponse = await requireOk(await fetch(`${baseUrl}/api/levels`, {
    method: 'POST', headers,
    body: JSON.stringify({ id: authoringId, title: manifest.title, subtitle: manifest.subtitle }),
  }), 'Create authoring level')
  const state = await createdResponse.json() as CaseState

  const documentPositions = new Map<string, { x: number; y: number }>()
  manifest.folders.forEach((folder, folderIndex) => folder.members.forEach((key, memberIndex) => documentPositions.set(key, { x: folder.x + 70 + memberIndex * 205, y: folder.y + 230 + folderIndex * 35 })))
  const documents = new Map<string, CaseDocument>()
  for (const source of manifest.documents) {
    const uploaded = await uploadAsset(baseUrl, state.id, manifestDir, source, authorization)
    documents.set(source.key, {
      id: uploaded?.id || randomUUID(), type: 'document', title: source.title, publishedAt: source.publishedAt,
      x: documentPositions.get(source.key)?.x || 100, y: documentPositions.get(source.key)?.y || 100,
      width: uploaded?.width || 174, height: uploaded?.height || 145, rotation: 0, zIndex: uploaded?.zIndex || 1, hidden: false,
      body: source.body || [], regions: [], assetId: uploaded?.assetId,
      fileName: uploaded?.fileName, mimeType: uploaded?.mimeType, fileSize: uploaded?.fileSize,
      fileType: source.fileType, metadata: source.metadata || {}, requiredFlags: source.requiredFlags || [],
    })
  }

  const folderIds = new Map(manifest.folders.map(folder => [folder.key, randomUUID()]))
  state.brief = { body: manifest.brief.body, concepts: manifest.brief.concepts.map(concept => ({ id: randomUUID(), ...concept })) }
  state.views = state.views.map(view => view.type === 'timeline' ? { ...view, rangeMode: manifest.timelineRange ? 'fixed' : 'auto', range: manifest.timelineRange } : view)
  const folders = manifest.folders.map(folder => ({
    id: folderIds.get(folder.key)!, type: 'folder', title: folder.title, content: folder.content,
    x: folder.x, y: folder.y, width: folder.width, height: 166, rotation: 0, zIndex: 1, hidden: false, isOpen: false,
  } as const))
  const claims:ClaimExhibit[]=(manifest.claims || []).map(claim => ({ id:randomUUID(),type:'claim',title:claim.statement,statement:claim.statement,
    x:claim.x,y:claim.y,width:claim.width || 310,height:claim.height || 180,rotation:0,zIndex:2,hidden:false }))
  state.exhibits = [...documents.values(), ...folders,...claims]
  state.relations = manifest.folders.flatMap(folder => folder.members.map((key, memberIndex) => {
    const document = documents.get(key)
    if (!document) throw new Error(`Folder ${folder.key} refers to unknown document ${key}`)
    return {
      id: `contains:${folderIds.get(folder.key)}:${document.id}`,
      fromExhibitId: folderIds.get(folder.key)!, toExhibitId: document.id, type: 'contains' as const, sortOrder: memberIndex,
    }
  }))
  state.connections = []
  state.report=manifest.report ? { title:manifest.report.title || 'Case Report',investigatorName:'',requiredForCompletion:manifest.report.requiredForCompletion !== false,
    status:'draft',issues:[],claims:[] } : undefined
  state.viewport = { x: 0, y: 28, zoom: 0.7 }

  await requireOk(await fetch(`${baseUrl}/api/levels/${state.id}?edit=1`, {
    method: 'PUT', headers, body: JSON.stringify(state),
  }), 'Save authored mystery')

  const goalIds = new Map<string,string>()
  for (const goal of manifest.goals || []) {
    const response = await requireOk(await fetch(`${baseUrl}/api/levels/${state.id}/goals`, {
      method:'POST',headers,body:JSON.stringify(goal),
    }), `Create goal ${goal.key}`)
    const created = await response.json() as { id:string;key:string }
    goalIds.set(created.key,created.id)
  }
  for (const rule of manifest.evidenceMatchRules || []) await requireOk(await fetch(
    `${baseUrl}/api/levels/${state.id}/evidence-match-rules`, { method:'POST',headers,body:JSON.stringify(rule) }),
  `Create evidence match rule ${rule.name}`)
  for (const rule of manifest.evidenceSemanticRules || []) {
    const goalId = goalIds.get(rule.goalKey)
    if (!goalId) throw new Error(`Semantic evidence rule ${rule.name} refers to unknown goal ${rule.goalKey}`)
    await requireOk(await fetch(`${baseUrl}/api/levels/${state.id}/evidence-semantic-rules`, {
      method:'POST',headers,body:JSON.stringify({ ...rule,goalKey:undefined,goalId }),
    }), `Create semantic evidence rule ${rule.name}`)
  }
  const templateResponse = await requireOk(await fetch(`${baseUrl}/api/levels/${state.id}/templates?edit=1`, {
    method: 'POST', headers, body: JSON.stringify({ slug: manifest.slug, name: manifest.name }),
  }), 'Freeze mystery template')
  const template = await templateResponse.json() as { slug: string; currentVersion: number }

  // Author the mystery and its NPC cast; the flow lives in the story graph, seeded below.
  let mystery: { slug: string } | undefined
  if (manifest.narrative) {
    const mysteryResponse = await requireOk(await fetch(`${baseUrl}/api/mysteries?edit=1`, {
      method: 'POST', headers, body: JSON.stringify({ slug: manifest.slug, title: manifest.title, cast: manifest.narrative.cast }),
    }), 'Author narrative mystery')
    mystery = await mysteryResponse.json() as { slug: string }

    // Seed the story flow graph (default authored content that survives re-imports).
    if (manifest.narrative.graph) {
      const listResponse = await requireOk(await fetch(`${baseUrl}/api/admin/mysteries`, { headers: authorization ? { authorization } : undefined }), 'List mysteries')
      const mysteries = await listResponse.json() as { id: string; slug: string }[]
      const mysteryId = mysteries.find(m => m.slug === manifest.slug)?.id
      if (mysteryId) await requireOk(await fetch(`${baseUrl}/api/admin/mysteries/${mysteryId}/graph`, {
        method: 'POST', headers, body: JSON.stringify(manifest.narrative.graph),
      }), 'Seed story graph')
    }
  }

  const playableId = `${manifest.slug}-case-${Date.now()}`
  const playableResponse = await requireOk(await fetch(`${baseUrl}/api/templates/${manifest.slug}/levels?edit=1`, {
    method: 'POST', headers, body: JSON.stringify({ id: playableId, title: manifest.title }),
  }), 'Instantiate playable mystery')
  const playable = await playableResponse.json() as CaseState
  return { manifest, template, mystery, authoringLevelId: state.id, playableLevel: playable }
}

const invokedPath = process.argv[1] ? path.resolve(process.argv[1]) : ''
if (invokedPath === fileURLToPath(import.meta.url)) {
  const manifestPath = process.argv[2]
  if (!manifestPath) throw new Error('Usage: npm run mystery:import -- <manifest.json>')
  const result = await importMysteryTemplate(manifestPath, process.env.OSINT_BOARD_URL)
  console.log(JSON.stringify({
    template: `${result.template.slug}@v${result.template.currentVersion}`,
    mystery: result.mystery ? result.mystery.slug : undefined,
    authoringLevelId: result.authoringLevelId,
    playableLevelId: result.playableLevel.id,
    playUrl: `${process.env.OSINT_BOARD_URL || 'http://localhost:8787'}/`,
  }, null, 2))
}