// pages/edit/edit.js
let util = require('../../utils/util')

Page({
  /**
   * 页面的初始数据
   */
  data: {
    issuer: '',
    remark: '',
    secret: '',
    type: '',
    counter: 0,
    isHotp: false,
    isSubmitting: false,
    token: [],
    token_id: null,
    hasLoaded: false
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    if (!options.token_id) {
      wx.showToast({
        title: '参数错误',
        icon: 'error',
        duration: 2000
      })
      setTimeout(() => {
        wx.navigateBack({ delta: 1 })
      }, 2000)
      return
    }

    this.setData({
      token_id: options.token_id
    })

    this.loadTokenData()
  },

  /**
   * 加载令牌数据
   */
  loadTokenData: function() {
    const self = this
    wx.getStorage({
      key: 'tokens',
      success: function(res) {
        const tokens = res.data
        const targetToken = tokens.find(token => String(token.id) === String(self.data.token_id))
        
        if (!targetToken) {
          wx.showToast({
            title: '令牌不存在',
            icon: 'error',
            duration: 2000
          })
          setTimeout(() => {
            wx.navigateBack({ delta: 1 })
          }, 2000)
          return
        }

        self.setData({
          tokens: tokens,
          issuer: targetToken.issuer || '',
          remark: targetToken.remark || '',
          secret: targetToken.secret || '',
          type: targetToken.type || 'totp',
          counter: targetToken.counter || 0,
          isHotp: targetToken.type === 'hotp',
          hasLoaded: true
        })
      },
      fail: function(err) {
        wx.showToast({
          title: '加载失败',
          icon: 'error',
          duration: 2000
        })
        setTimeout(() => {
          wx.navigateBack({ delta: 1 })
        }, 2000)
      }
    })
  },

  // 验证计数器值
  validateCounter: function(counter) {
    const num = parseInt(counter)
    if (isNaN(num) || num < 0) {
      wx.showToast({
        title: '计数器值必须是非负整数',
        icon: 'none',
        duration: 2000
      })
      return false
    }
    return true
  },

  // 修改并提交数据
  keySubmit: function (e) {
    const self = this
    const values = e.detail.value

    // 防止重复提交
    if (this.data.isSubmitting) {
      return
    }

    // 检查数据是否已加载
    if (!this.data.hasLoaded) {
      wx.showToast({
        title: '数据未加载完成',
        icon: 'error',
        duration: 2000
      })
      return
    }

    // 检查必填字段
    if (!values.issuer || !values.issuer.trim()) {
      wx.showToast({
        title: '发行方不能为空',
        icon: 'none',
        duration: 2000
      })
      return
    }

    // 如果是HOTP类型，验证计数器值
    if (this.data.isHotp && values.counter !== undefined) {
      if (!this.validateCounter(values.counter)) {
        return
      }
    }

    this.setData({
      isSubmitting: true
    })

    // 创建tokens的副本并更新数据
    const updatedTokens = [...this.data.tokens]
    const tokenIndex = updatedTokens.findIndex(token => String(token.id) === String(this.data.token_id))
    
    if (tokenIndex === -1) {
      wx.showToast({
        title: '令牌不存在',
        icon: 'error',
        duration: 2000
      })
      this.setData({
        isSubmitting: false
      })
      return
    }

    // 更新令牌数据
    updatedTokens[tokenIndex] = {
      ...updatedTokens[tokenIndex],
      issuer: values.issuer.trim(),
      remark: (values.remark || '').trim(),
      secret: this.data.secret, // 使用已加载的secret，而不是从表单获取
      type: this.data.type
    }
    
    // 如果是HOTP类型，更新计数器值
    if (this.data.isHotp && values.counter !== undefined) {
      updatedTokens[tokenIndex].counter = parseInt(values.counter)
    }

    wx.setStorage({
      key: 'tokens',
      data: updatedTokens,
      success: function(res) {
        // 更新本地数据
        self.setData({
          tokens: updatedTokens
        })
        
        // 保存到本地存储
        wx.setStorageSync('tokens', updatedTokens)
        
        wx.showToast({
          title: '更新成功',
          icon: 'success',
          duration: 1500
        })
        
        setTimeout(() => {
          wx.navigateBack({
            delta: 1,
          })
        }, 1500)
      },
      fail: function(err) {
        wx.showToast({
          title: '保存失败',
          icon: 'error',
          duration: 2000
        })
      },
      complete: function() {
        self.setData({
          isSubmitting: false
        })
      }
    })
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
    // 清理数据，防止下次加载时出现数据混淆
    this.setData({
      token: [],
      token_id: null,
      hasLoaded: false,
      isSubmitting: false,
      issuer: '',
      remark: '',
      secret: '',
      type: '',
      counter: 0,
      isHotp: false
    })
  }
})