import { defineStore } from 'pinia'
import { authApi, profileApi } from '@/api/auth'
import { courseApi } from '@/api/courses'
import { activityApi } from '@/api/activities'
import type { ApiUser } from '@/types/api'
import type { UserProfile } from '@/types'
import { clearToken, setToken } from '@/utils/request'
import { DEFAULT_AVATAR_SRC } from '@/utils/svg'

import { CAN_SEE_RADAR_STORAGE_KEY } from '@/stores/tabbar'

const STORAGE_KEYS = {
  profile: 'slakeProfile',
}

function syncRadarTabPermission(user: ApiUser | null) {
  uni.setStorageSync(CAN_SEE_RADAR_STORAGE_KEY, Boolean(user?.can_see_radar))
}

function readJson<T>(key: string, fallback: T): T {
  try {
    const raw = uni.getStorageSync(key)
    if (!raw) return fallback
    return typeof raw === 'string' ? JSON.parse(raw) : raw
  } catch {
    return fallback
  }
}

export const useUserStore = defineStore('user', {
  state: () => ({
    user: null as ApiUser | null,
    profile: readJson<UserProfile>(STORAGE_KEYS.profile, {}),
    signedCourseIds: [] as number[],
    signedActivityIds: [] as number[],
    authReady: false,
    _authInitPromise: null as Promise<void> | null,
  }),
  getters: {
    isLoggedIn: (state) => Boolean(state.user),
    isPartner: (state) => Boolean(state.user?.is_partner),
    displayName: (state) => {
      if (!state.user) return '未登录'
      return state.user.name || state.user.nickname || state.profile.name || '微信用户'
    },
    avatarSrc: (state) => {
      if (!state.user) return DEFAULT_AVATAR_SRC
      return state.user.avatar_url || state.profile.avatar || DEFAULT_AVATAR_SRC
    },
    canSeeRadar: (state) => Boolean(state.user?.can_see_radar),
    canSeePapers: (state) => Boolean(state.user?.can_see_papers),
    isStaff: (state) => Boolean(state.user?.is_admin || state.user?.is_grid_member),
  },
  actions: {
    async loginWithWechat(code: string, profile?: { nickname?: string; avatar_url?: string }) {
      const data = await authApi.wechatLogin({ code, ...profile })
      this.applyAuth(data.token, data.user)
    },
    async loginWithDev(profile?: { nickname?: string; avatar_url?: string }) {
      const data = await authApi.devLogin(profile)
      this.applyAuth(data.token, data.user)
    },
    applyAuth(token: string, user: ApiUser) {
      setToken(token)
      this.user = user
      this.profile = {
        ...this.profile,
        name: user.name || user.nickname || this.profile.name,
        avatar: user.avatar_url || this.profile.avatar,
        company: user.company || this.profile.company,
        mobile: user.mobile || this.profile.mobile,
        title: user.job_title || this.profile.title,
        research_direction: user.research_direction || this.profile.research_direction,
        research_direction_ids: user.research_direction_ids || this.profile.research_direction_ids,
        custom_research_directions: [],
      }
      uni.setStorageSync(STORAGE_KEYS.profile, JSON.stringify(this.profile))
      syncRadarTabPermission(user)
    },
    async fetchMe() {
      const user = await authApi.me()
      this.user = user
      this.profile = {
        ...this.profile,
        name: user.name || user.nickname || this.profile.name,
        avatar: user.avatar_url || this.profile.avatar,
        company: user.company || this.profile.company,
        mobile: user.mobile || this.profile.mobile,
        title: user.job_title || this.profile.title,
        research_direction: user.research_direction || this.profile.research_direction,
        research_direction_ids: user.research_direction_ids || this.profile.research_direction_ids,
        custom_research_directions: [],
      }
      uni.setStorageSync(STORAGE_KEYS.profile, JSON.stringify(this.profile))
      syncRadarTabPermission(user)
      await this.syncSignups()
    },
    async syncSignups() {
      if (!this.isLoggedIn) return
      const [courses, activities] = await Promise.all([
        courseApi.mySignups(),
        activityApi.mySignups(),
      ])
      this.signedCourseIds = courses.items.map((item) => item.id)
      this.signedActivityIds = activities.items.map((item) => item.id)
    },
    async logout() {
      try {
        await authApi.logout()
      } catch {
        // ignore
      }
      this.user = null
      this.signedCourseIds = []
      this.signedActivityIds = []
      syncRadarTabPermission(null)
      clearToken()
    },
    async saveProfile(profile: UserProfile) {
      let user = this.user
      if (this.isLoggedIn) {
        user = await profileApi.update({
          name: profile.name,
          mobile: profile.mobile,
          company: profile.company,
          avatar_url: profile.avatar,
          nickname: profile.name,
          job_title: profile.title,
          research_direction_ids: profile.research_direction_ids,
          custom_research_directions: profile.custom_research_directions,
        })
        this.user = user
      }
      this.profile = {
        ...this.profile,
        ...profile,
        research_direction: user?.research_direction || this.profile.research_direction,
        research_direction_ids: user?.research_direction_ids || profile.research_direction_ids,
        custom_research_directions: [],
      }
      uni.setStorageSync(STORAGE_KEYS.profile, JSON.stringify(this.profile))
    },
    markCourseSigned(id: number) {
      if (!this.signedCourseIds.includes(id)) {
        this.signedCourseIds.push(id)
      }
    },
    markActivitySigned(id: number) {
      if (!this.signedActivityIds.includes(id)) {
        this.signedActivityIds.push(id)
      }
    },
    hasSignedCourse(id: number) {
      return this.signedCourseIds.includes(id)
    },
    hasSignedActivity(id: number) {
      return this.signedActivityIds.includes(id)
    },
    async ensureAuth() {
      const token = uni.getStorageSync('slake_miniapp_token')
      if (!token) {
        this.user = null
        this.authReady = true
        return
      }
      if (this.user) {
        this.authReady = true
        return
      }
      if (!this._authInitPromise) {
        this._authInitPromise = this.fetchMe()
          .then(() => {
            this.authReady = true
          })
          .catch(() => {
            clearToken()
            this.user = null
            this.profile = {}
            uni.removeStorageSync(STORAGE_KEYS.profile)
            this.authReady = true
          })
          .finally(() => {
            this._authInitPromise = null
          })
      }
      await this._authInitPromise
    },
    async bootstrap() {
      await this.ensureAuth()
    },
  },
})