/**
 * 部署后首次启动前执行：
 * 1. 若库中尚无 admin，则用环境变量创建首个管理员。
 * 2. 若库中尚无 agent，则种入 default + coder agent 及工具集（对齐 seed.ts）。
 * 使用 SQLite（与 `migrate-sqlite.js` 相同）。
 *
 * 环境变量（与 seed.ts 一致）：
 * - DATABASE_URL：SQLite 路径，可为 `file:/path/to/db.sqlite` 或裸路径
 * - BOOTSTRAP_ADMIN_USERNAME / BOOTSTRAP_ADMIN_PASSWORD：可选；未设置或校验失败则跳过
 */
import { createClient } from '@libsql/client'
import { hash } from 'bcryptjs'
import { mkdirSync } from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

/** 与 `server/service/auth/index.ts` 一致 */
const USERNAME_REGEX = /^[a-zA-Z0-9_]{3,20}$/
const MIN_PASSWORD_LENGTH = 6

/**
 * 与 `migrate-sqlite.js` 一致：相对路径相对 `process.cwd()`（例如 `.output/run.sh` 下与迁移写入同一文件）。
 * Nitro 内 `resolveSqliteDatabaseUrl` 在无法锚定 drizzle-pkg 时也会回退到 cwd，避免「迁移/seed 成功、服务 CANTOPEN」。
 */
function resolveSqliteFilePath(dbUrl) {
  const stripped = dbUrl.startsWith('file:') ? dbUrl.slice('file:'.length) : dbUrl
  if (!stripped) {
    throw new Error('DATABASE_URL 未设置，且未提供有效的 SQLite 文件路径')
  }
  if (path.isAbsolute(stripped)) {
    return stripped
  }
  return path.resolve(process.cwd(), stripped)
}

function openClient() {
  const dbUrl = process.env.DATABASE_URL || ''
  const sqlitePath = resolveSqliteFilePath(dbUrl)
  mkdirSync(path.dirname(sqlitePath), { recursive: true })
  return createClient({ url: `file:${sqlitePath}` })
}

// ============ Agent / Tool seed 数据（对齐 packages/drizzle-pkg/seed.ts）============
const DEFAULT_SYSTEM_PROMPT =
  'You are a helpful AI assistant. Answer questions concisely and accurately. When tools are available, use them proactively to provide better answers.'

const CODER_SYSTEM_PROMPT = `You are a professional coding assistant. You help users with programming questions, code review, debugging, and software design.

Guidelines:
- Provide clear, concise, and accurate answers
- When showing code, use proper markdown code blocks with language tags
- Proactively use available tools (fetch, search, regex-tester) to gather information when needed
- Explain your reasoning when making architectural or design decisions
- If you're unsure, say so rather than guessing
- Focus on practical, working solutions`

const TOOLS_SEED = [
  { id: 'tool_fetch_html', name: 'fetch_html', slug: 'fetch_html', description: 'Fetch a URL and return the HTML content', type: 'fetch', config: { parseMode: 'raw', timeout: 30000, allowedDomains: ['*'], blockedDomains: [], maxResponseSize: 102400, defaultMethod: 'GET', defaultHeaders: {} }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 10 },
  { id: 'tool_fetch_md', name: 'fetch_md', slug: 'fetch_md', description: 'Fetch a URL and return the content as markdown', type: 'fetch', config: { parseMode: 'markdown', timeout: 30000, allowedDomains: ['*'], blockedDomains: [], maxResponseSize: 102400, defaultMethod: 'GET', defaultHeaders: {} }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 11 },
  { id: 'tool_fetch_json', name: 'fetch_json', slug: 'fetch_json', description: 'Fetch a URL and return the JSON content', type: 'fetch', config: { parseMode: 'json', timeout: 30000, allowedDomains: ['*'], blockedDomains: [], maxResponseSize: 102400, defaultMethod: 'GET', defaultHeaders: {} }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 12 },
  { id: 'tool_calculator', name: 'calculator', slug: 'calculator', description: 'Evaluate a mathematical expression', type: 'calculator', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 20 },
  { id: 'tool_datetime', name: 'datetime', slug: 'datetime', description: 'Get current date and time', type: 'datetime', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 30 },
  { id: 'tool_uuid', name: 'uuid', slug: 'uuid', description: 'Generate a UUID', type: 'uuid', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 40 },
  { id: 'tool_base64', name: 'base64', slug: 'base64', description: 'Encode or decode base64 strings', type: 'base64', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 50 },
  { id: 'tool_json_formatter', name: 'json-formatter', slug: 'json-formatter', description: 'Format and validate JSON strings', type: 'json-formatter', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 60 },
  { id: 'tool_regex_tester', name: 'regex-tester', slug: 'regex-tester', description: 'Test a regular expression against a string', type: 'regex-tester', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 70 },
  { id: 'tool_user_info', name: 'user-info', slug: 'user-info', description: 'Get current user information', type: 'user-info', config: {}, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 80 },
  { id: 'tool_search', name: 'search', slug: 'search', description: 'Search the web for information', type: 'search', config: { maxResults: 5 }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 90 },
  { id: 'tool_hash', name: 'hash', slug: 'hash', description: 'Compute hash (md5/sha1/sha256/sha512) or compare hashes', type: 'hash', config: { defaultAlgorithm: 'sha256', uppercase: false }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 100 },
  { id: 'tool_color', name: 'color', slug: 'color', description: 'Color conversion (hex/rgb/hsl), random color, mix colors, WCAG contrast', type: 'color', config: { defaultFormat: 'hex' }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 110 },
  { id: 'tool_dice', name: 'dice', slug: 'dice', description: 'Roll dice, flip coin, pick from list, or play rock-paper-scissors', type: 'dice', config: { defaultSides: 6 }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 120 },
  { id: 'tool_magic_8ball', name: 'magic-8ball', slug: 'magic-8ball', description: 'Magic 8-Ball fortune telling and daily fortune', type: 'magic-8ball', config: { language: 'zh' }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 130 },
  { id: 'tool_guess_who', name: 'guess-who', slug: 'guess-who', description: 'Guess who game - AI guesses your character or you guess AI character', type: 'guess-who', config: { language: 'zh', maxQuestions: 20, difficulty: 'medium' }, enabled: 1, needsApproval: 0, adminOnly: 0, sortOrder: 140 },
  { id: 'tool_document', name: 'document', slug: 'document', description: '创建、读取、更新、删除和列出文档，用于记忆管理和交付物产出', type: 'document', config: { approvalRequiredActions: ['delete'], maxContentLength: 10000, defaultTokenBudget: 2000, maxListSize: 20 }, enabled: 1, needsApproval: 1, adminOnly: 0, sortOrder: 150 },
]

const AGENTS_SEED = [
  {
    slug: 'default',
    name: '默认助手',
    description: '通用 AI 助手',
    systemPrompt: DEFAULT_SYSTEM_PROMPT,
    titleStrategy: 'llm',
    enableThinking: 0,
    enableTools: 1,
    maxStepCount: 6,
    isDefault: 1,
    isCallable: 0,
    sortOrder: 0,
    enabled: 1,
    toolIds: TOOLS_SEED.map((t) => t.id),
  },
  {
    slug: 'coder',
    name: '编程助手',
    description: '专注于编程问题的 AI 助手',
    systemPrompt: CODER_SYSTEM_PROMPT,
    titleStrategy: 'first-line',
    enableThinking: 1,
    enableTools: 1,
    maxStepCount: 12,
    isDefault: 0,
    isCallable: 1,
    sortOrder: 10,
    enabled: 1,
    toolIds: ['tool_fetch_md', 'tool_search', 'tool_regex_tester'],
  },
]

async function seedAdmin(db) {
  const rs = await db.execute({
    sql: `SELECT id FROM users WHERE role = ? LIMIT 1`,
    args: ['admin'],
  })
  if (rs.rows.length > 0) {
    console.log('Bootstrap skipped: admin exists')
    return
  }

  const username = process.env.BOOTSTRAP_ADMIN_USERNAME
  const password = process.env.BOOTSTRAP_ADMIN_PASSWORD

  if (!username || !password) {
    console.warn(
      'Bootstrap skipped: set BOOTSTRAP_ADMIN_USERNAME and BOOTSTRAP_ADMIN_PASSWORD',
    )
    return
  }

  if (!USERNAME_REGEX.test(username) || password.length < MIN_PASSWORD_LENGTH) {
    console.warn(
      'Bootstrap skipped: invalid BOOTSTRAP_ADMIN_USERNAME or BOOTSTRAP_ADMIN_PASSWORD',
    )
    return
  }

  const passwordHash = await hash(password, 10)
  const maxRs = await db.execute(`SELECT COALESCE(MAX(id), 0) AS maxId FROM users`)
  const { maxId } = maxRs.rows[0]
  const userId = (maxId ?? 0) + 1

  try {
    await db.execute({
      sql: `
      INSERT INTO users (id, username, password, role, status)
      VALUES (@id, @username, @password, @role, @status)
    `,
      args: {
        id: userId,
        username,
        password: passwordHash,
        role: 'admin',
        status: 'active',
      },
    })
    console.log('Bootstrap complete: admin user created')
  } catch (err) {
    console.warn(
      'Bootstrap skipped: could not insert admin (unique conflict or DB error)',
      err,
    )
  }
}

async function seedAgentsAndTools(db) {
  // 幂等：已有 agent 则跳过
  const agentRs = await db.execute(`SELECT COUNT(*) AS cnt FROM agents`)
  const agentCount = agentRs.rows[0]?.cnt ?? 0
  if (agentCount > 0) {
    console.log('Seed skipped: agents already exist')
    return
  }

  // 1. 种入工具
  const toolRs = await db.execute(`SELECT COUNT(*) AS cnt FROM agent_tools`)
  const toolCount = toolRs.rows[0]?.cnt ?? 0
  if (toolCount === 0) {
    for (const t of TOOLS_SEED) {
      await db.execute({
        sql: `INSERT INTO agent_tools (id, name, slug, description, type, config, enabled, needs_approval, admin_only, sort_order)
              VALUES (@id, @name, @slug, @description, @type, @config, @enabled, @needsApproval, @adminOnly, @sortOrder)`,
        args: {
          id: t.id,
          name: t.name,
          slug: t.slug,
          description: t.description,
          type: t.type,
          config: JSON.stringify(t.config),
          enabled: t.enabled,
          needsApproval: t.needsApproval,
          adminOnly: t.adminOnly,
          sortOrder: t.sortOrder,
        },
      })
    }
    console.log(`Seeded ${TOOLS_SEED.length} tools`)
  } else {
    console.log(`Seed skipped: ${toolCount} tools already exist`)
  }

  // 2. 种入 agent + 工具关联
  for (const a of AGENTS_SEED) {
    const result = await db.execute({
      sql: `INSERT INTO agents (slug, name, description, system_prompt, title_strategy, enable_thinking, enable_tools, max_step_count, is_default, is_callable, sort_order, enabled)
            VALUES (@slug, @name, @description, @systemPrompt, @titleStrategy, @enableThinking, @enableTools, @maxStepCount, @isDefault, @isCallable, @sortOrder, @enabled)`,
      args: {
        slug: a.slug,
        name: a.name,
        description: a.description,
        systemPrompt: a.systemPrompt,
        titleStrategy: a.titleStrategy,
        enableThinking: a.enableThinking,
        enableTools: a.enableTools,
        maxStepCount: a.maxStepCount,
        isDefault: a.isDefault,
        isCallable: a.isCallable,
        sortOrder: a.sortOrder,
        enabled: a.enabled,
      },
    })
    const agentId = result.lastInsertRowid
    for (let i = 0; i < a.toolIds.length; i++) {
      await db.execute({
        sql: `INSERT INTO agent_tool_associations (agent_id, tool_id, sort_order) VALUES (@agentId, @toolId, @sortOrder)`,
        args: { agentId, toolId: a.toolIds[i], sortOrder: i },
      })
    }
    console.log(`Seeded agent "${a.slug}" with ${a.toolIds.length} tool associations`)
  }
}

async function main() {
  const db = openClient()
  try {
    await seedAdmin(db)
    await seedAgentsAndTools(db)
  } finally {
    // @libsql/client 无需手动 close
  }
}

const isMain =
  process.argv[1] && path.resolve(process.argv[1]) === fileURLToPath(import.meta.url)

if (isMain) {
  // 成功时自然退出（退出码 0）；仅未捕获错误时 process.exit(1)。
  main().catch((e) => {
    console.error(e)
    process.exit(1)
  })
}