/**
 * Admin Routes - OpenAI-Responses 账户管理
 * 处理 OpenAI-Responses 账户的增删改查和状态管理
 */

const express = require('express')
const openaiResponsesAccountService = require('../../services/openaiResponsesAccountService')
const apiKeyService = require('../../services/apiKeyService')
const accountGroupService = require('../../services/accountGroupService')
const redis = require('../../models/redis')
const { authenticateAdmin } = require('../../middleware/auth')
const logger = require('../../utils/logger')
const webhookNotifier = require('../../utils/webhookNotifier')
const { formatAccountExpiry, mapExpiryField } = require('./utils')

const router = express.Router()

// ==================== OpenAI-Responses 账户管理 API ====================

// 获取所有 OpenAI-Responses 账户
router.get('/openai-responses-accounts', authenticateAdmin, async (req, res) => {
  try {
    const { platform, groupId } = req.query
    let accounts = await openaiResponsesAccountService.getAllAccounts(true)

    // 根据查询参数进行筛选
    if (platform && platform !== 'openai-responses') {
      accounts = []
    }

    // 根据分组ID筛选
    if (groupId) {
      const group = await accountGroupService.getGroup(groupId)
      if (group && group.platform === 'openai') {
        const groupMembers = await accountGroupService.getGroupMembers(groupId)
        accounts = accounts.filter((account) => groupMembers.includes(account.id))
      } else {
        accounts = []
      }
    }

    // 处理额度信息、使用统计和绑定的 API Key 数量
    const accountsWithStats = await Promise.all(
      accounts.map(async (account) => {
        try {
          // 检查是否需要重置额度
          const today = redis.getDateStringInTimezone()
          if (account.lastResetDate !== today) {
            // 今天还没重置过，需要重置
            await openaiResponsesAccountService.updateAccount(account.id, {
              dailyUsage: '0',
              lastResetDate: today,
              quotaStoppedAt: ''
            })
            account.dailyUsage = '0'
            account.lastResetDate = today
            account.quotaStoppedAt = ''
          }

          // 检查并清除过期的限流状态
          await openaiResponsesAccountService.checkAndClearRateLimit(account.id)

          // 获取使用统计信息
          let usageStats
          try {
            usageStats = await redis.getAccountUsageStats(account.id, 'openai-responses')
          } catch (error) {
            logger.debug(
              `Failed to get usage stats for OpenAI-Responses account ${account.id}:`,
              error
            )
            usageStats = {
              daily: { requests: 0, tokens: 0, allTokens: 0 },
              total: { requests: 0, tokens: 0, allTokens: 0 },
              monthly: { requests: 0, tokens: 0, allTokens: 0 }
            }
          }

          // 计算绑定的API Key数量（支持 responses: 前缀）
          const allKeys = await redis.getAllApiKeys()
          let boundCount = 0

          for (const key of allKeys) {
            // 检查是否绑定了该账户（包括 responses: 前缀）
            if (
              key.openaiAccountId === account.id ||
              key.openaiAccountId === `responses:${account.id}`
            ) {
              boundCount++
            }
          }

          // 调试日志：检查绑定计数
          if (boundCount > 0) {
            logger.info(`OpenAI-Responses account ${account.id} has ${boundCount} bound API keys`)
          }

          // 获取分组信息
          const groupInfos = await accountGroupService.getAccountGroups(account.id)

          const formattedAccount = formatAccountExpiry(account)
          return {
            ...formattedAccount,
            groupInfos,
            boundApiKeysCount: boundCount,
            usage: {
              daily: usageStats.daily,
              total: usageStats.total,
              monthly: usageStats.monthly
            }
          }
        } catch (error) {
          logger.error(`Failed to process OpenAI-Responses account ${account.id}:`, error)
          const formattedAccount = formatAccountExpiry(account)
          return {
            ...formattedAccount,
            groupInfos: [],
            boundApiKeysCount: 0,
            usage: {
              daily: { requests: 0, tokens: 0, allTokens: 0 },
              total: { requests: 0, tokens: 0, allTokens: 0 },
              monthly: { requests: 0, tokens: 0, allTokens: 0 }
            }
          }
        }
      })
    )

    res.json({ success: true, data: accountsWithStats })
  } catch (error) {
    logger.error('Failed to get OpenAI-Responses accounts:', error)
    res.status(500).json({ success: false, message: error.message })
  }
})

// 创建 OpenAI-Responses 账户
router.post('/openai-responses-accounts', authenticateAdmin, async (req, res) => {
  try {
    const accountData = req.body

    // 验证分组类型
    if (
      accountData.accountType === 'group' &&
      !accountData.groupId &&
      (!accountData.groupIds || accountData.groupIds.length === 0)
    ) {
      return res.status(400).json({
        success: false,
        error: 'Group ID is required for group type accounts'
      })
    }

    const account = await openaiResponsesAccountService.createAccount(accountData)

    // 如果是分组类型，处理分组绑定
    if (accountData.accountType === 'group') {
      if (accountData.groupIds && accountData.groupIds.length > 0) {
        // 多分组模式
        await accountGroupService.setAccountGroups(account.id, accountData.groupIds, 'openai')
        logger.info(
          `🏢 Added OpenAI-Responses account ${account.id} to groups: ${accountData.groupIds.join(', ')}`
        )
      } else if (accountData.groupId) {
        // 单分组模式（向后兼容）
        await accountGroupService.addAccountToGroup(account.id, accountData.groupId, 'openai')
        logger.info(
          `🏢 Added OpenAI-Responses account ${account.id} to group: ${accountData.groupId}`
        )
      }
    }

    const formattedAccount = formatAccountExpiry(account)
    res.json({ success: true, data: formattedAccount })
  } catch (error) {
    logger.error('Failed to create OpenAI-Responses account:', error)
    res.status(500).json({
      success: false,
      error: error.message
    })
  }
})

// 更新 OpenAI-Responses 账户
router.put('/openai-responses-accounts/:id', authenticateAdmin, async (req, res) => {
  try {
    const { id } = req.params
    const updates = req.body

    // 获取当前账户信息
    const currentAccount = await openaiResponsesAccountService.getAccount(id)
    if (!currentAccount) {
      return res.status(404).json({
        success: false,
        error: 'Account not found'
      })
    }

    // ✅ 【新增】映射字段名：前端的 expiresAt -> 后端的 subscriptionExpiresAt
    const mappedUpdates = mapExpiryField(updates, 'OpenAI-Responses', id)

    // 验证priority的有效性（1-100）
    if (mappedUpdates.priority !== undefined) {
      const priority = parseInt(mappedUpdates.priority)
      if (isNaN(priority) || priority < 1 || priority > 100) {
        return res.status(400).json({
          success: false,
          message: 'Priority must be a number between 1 and 100'
        })
      }
      mappedUpdates.priority = priority.toString()
    }

    // 处理分组变更
    if (mappedUpdates.accountType !== undefined) {
      // 如果之前是分组类型，需要从所有分组中移除
      if (currentAccount.accountType === 'group') {
        const oldGroups = await accountGroupService.getAccountGroups(id)
        for (const oldGroup of oldGroups) {
          await accountGroupService.removeAccountFromGroup(id, oldGroup.id)
        }
        logger.info(`📤 Removed OpenAI-Responses account ${id} from all groups`)
      }

      // 如果新类型是分组，处理多分组支持
      if (mappedUpdates.accountType === 'group') {
        if (Object.prototype.hasOwnProperty.call(mappedUpdates, 'groupIds')) {
          if (mappedUpdates.groupIds && mappedUpdates.groupIds.length > 0) {
            // 设置新的多分组
            await accountGroupService.setAccountGroups(id, mappedUpdates.groupIds, 'openai')
            logger.info(
              `📥 Added OpenAI-Responses account ${id} to groups: ${mappedUpdates.groupIds.join(', ')}`
            )
          } else {
            // groupIds 为空数组，从所有分组中移除
            await accountGroupService.removeAccountFromAllGroups(id)
            logger.info(
              `📤 Removed OpenAI-Responses account ${id} from all groups (empty groupIds)`
            )
          }
        } else if (mappedUpdates.groupId) {
          // 向后兼容：仅当没有 groupIds 但有 groupId 时使用单分组逻辑
          await accountGroupService.addAccountToGroup(id, mappedUpdates.groupId, 'openai')
          logger.info(`📥 Added OpenAI-Responses account ${id} to group: ${mappedUpdates.groupId}`)
        }
      }
    }

    const result = await openaiResponsesAccountService.updateAccount(id, mappedUpdates)

    if (!result.success) {
      return res.status(400).json(result)
    }

    logger.success(`📝 Admin updated OpenAI-Responses account: ${id}`)
    res.json({ success: true, ...result })
  } catch (error) {
    logger.error('Failed to update OpenAI-Responses account:', error)
    res.status(500).json({
      success: false,
      error: error.message
    })
  }
})

// 删除 OpenAI-Responses 账户
router.delete('/openai-responses-accounts/:id', authenticateAdmin, async (req, res) => {
  try {
    const { id } = req.params

    const account = await openaiResponsesAccountService.getAccount(id)
    if (!account) {
      return res.status(404).json({
        success: false,
        message: 'Account not found'
      })
    }

    // 自动解绑所有绑定的 API Keys
    const unboundCount = await apiKeyService.unbindAccountFromAllKeys(id, 'openai-responses')

    // 从所有分组中移除此账户
    if (account.accountType === 'group') {
      await accountGroupService.removeAccountFromAllGroups(id)
      logger.info(`Removed OpenAI-Responses account ${id} from all groups`)
    }

    const result = await openaiResponsesAccountService.deleteAccount(id)

    let message = 'OpenAI-Responses账号已成功删除'
    if (unboundCount > 0) {
      message += `，${unboundCount} 个 API Key 已切换为共享池模式`
    }

    logger.success(`🗑️ Admin deleted OpenAI-Responses account: ${id}, unbound ${unboundCount} keys`)

    res.json({
      success: true,
      ...result,
      message,
      unboundKeys: unboundCount
    })
  } catch (error) {
    logger.error('Failed to delete OpenAI-Responses account:', error)
    res.status(500).json({
      success: false,
      error: error.message
    })
  }
})

// 切换 OpenAI-Responses 账户调度状态
router.put(
  '/openai-responses-accounts/:id/toggle-schedulable',
  authenticateAdmin,
  async (req, res) => {
    try {
      const { id } = req.params

      const result = await openaiResponsesAccountService.toggleSchedulable(id)

      if (!result.success) {
        return res.status(400).json(result)
      }

      // 仅在停止调度时发送通知
      if (!result.schedulable) {
        await webhookNotifier.sendAccountEvent('account.status_changed', {
          accountId: id,
          platform: 'openai-responses',
          schedulable: result.schedulable,
          changedBy: 'admin',
          action: 'stopped_scheduling'
        })
      }

      res.json(result)
    } catch (error) {
      logger.error('Failed to toggle OpenAI-Responses account schedulable status:', error)
      res.status(500).json({
        success: false,
        error: error.message
      })
    }
  }
)

// 切换 OpenAI-Responses 账户激活状态
router.put('/openai-responses-accounts/:id/toggle', authenticateAdmin, async (req, res) => {
  try {
    const { id } = req.params

    const account = await openaiResponsesAccountService.getAccount(id)
    if (!account) {
      return res.status(404).json({
        success: false,
        message: 'Account not found'
      })
    }

    const newActiveStatus = account.isActive === 'true' ? 'false' : 'true'
    await openaiResponsesAccountService.updateAccount(id, {
      isActive: newActiveStatus
    })

    res.json({
      success: true,
      isActive: newActiveStatus === 'true'
    })
  } catch (error) {
    logger.error('Failed to toggle OpenAI-Responses account status:', error)
    res.status(500).json({
      success: false,
      error: error.message
    })
  }
})

// 重置 OpenAI-Responses 账户限流状态
router.post(
  '/openai-responses-accounts/:id/reset-rate-limit',
  authenticateAdmin,
  async (req, res) => {
    try {
      const { id } = req.params

      await openaiResponsesAccountService.updateAccount(id, {
        rateLimitedAt: '',
        rateLimitStatus: '',
        status: 'active',
        errorMessage: ''
      })

      logger.info(`🔄 Admin manually reset rate limit for OpenAI-Responses account ${id}`)

      res.json({
        success: true,
        message: 'Rate limit reset successfully'
      })
    } catch (error) {
      logger.error('Failed to reset OpenAI-Responses account rate limit:', error)
      res.status(500).json({
        success: false,
        error: error.message
      })
    }
  }
)

// 重置 OpenAI-Responses 账户状态（清除所有异常状态）
router.post('/openai-responses-accounts/:id/reset-status', authenticateAdmin, async (req, res) => {
  try {
    const { id } = req.params

    const result = await openaiResponsesAccountService.resetAccountStatus(id)

    logger.success(`✅ Admin reset status for OpenAI-Responses account: ${id}`)
    return res.json({ success: true, data: result })
  } catch (error) {
    logger.error('❌ Failed to reset OpenAI-Responses account status:', error)
    return res.status(500).json({ error: 'Failed to reset status', message: error.message })
  }
})

// 手动重置 OpenAI-Responses 账户的每日使用量
router.post('/openai-responses-accounts/:id/reset-usage', authenticateAdmin, async (req, res) => {
  try {
    const { id } = req.params

    await openaiResponsesAccountService.updateAccount(id, {
      dailyUsage: '0',
      lastResetDate: redis.getDateStringInTimezone(),
      quotaStoppedAt: ''
    })

    logger.success(`✅ Admin manually reset daily usage for OpenAI-Responses account ${id}`)

    res.json({
      success: true,
      message: 'Daily usage reset successfully'
    })
  } catch (error) {
    logger.error('Failed to reset OpenAI-Responses account usage:', error)
    res.status(500).json({
      success: false,
      error: error.message
    })
  }
})

module.exports = router