import { defineStore } from 'pinia'

import { AUTH_TOKEN_KEY, api } from '../lib/api'
import type { AuthSession, LoginPayload } from '../types/awards'

function readStoredToken() {
  if (typeof window === 'undefined') return null
  return window.localStorage.getItem(AUTH_TOKEN_KEY)
}

function writeStoredToken(token: string | null) {
  if (typeof window === 'undefined') return

  if (token) {
    window.localStorage.setItem(AUTH_TOKEN_KEY, token)
  } else {
    window.localStorage.removeItem(AUTH_TOKEN_KEY)
  }
}

export const useAuthStore = defineStore('auth', {
  state: () => ({
    session: null as AuthSession | null,
    hydrated: false,
    loading: false,
  }),
  getters: {
    isLoggedIn: (state) => Boolean(state.session),
    isAdmin: (state) => state.session?.role === 'admin',
  },
  actions: {
    async hydrate() {
      if (!readStoredToken()) {
        this.hydrated = true
        return
      }

      try {
        this.session = await api.getSession()
      } catch {
        this.session = null
        writeStoredToken(null)
      } finally {
        this.hydrated = true
      }
    },
    async login(payload: LoginPayload) {
      this.loading = true
      try {
        const session = await api.login(payload)
        this.session = session
        writeStoredToken(session.sessionToken)
      } finally {
        this.loading = false
      }
    },
    async logout() {
      this.loading = true
      try {
        await api.logout()
      } finally {
        this.session = null
        writeStoredToken(null)
        this.loading = false
      }
    },
  },
})