import { computed } from 'vue'

import { useApiKeyAuthStore } from '@/stores/apiKeyAuthStore'
import { useCommandStore } from '@/stores/commandStore'
import { useFirebaseAuthStore } from '@/stores/firebaseAuthStore'

export const useCurrentUser = () => {
  const authStore = useFirebaseAuthStore()
  const commandStore = useCommandStore()
  const apiKeyStore = useApiKeyAuthStore()

  const firebaseUser = computed(() => authStore.currentUser)
  const isApiKeyLogin = computed(() => apiKeyStore.isAuthenticated)
  const isLoggedIn = computed(
    () => !!isApiKeyLogin.value || firebaseUser.value !== null
  )

  const userDisplayName = computed(() => {
    if (isApiKeyLogin.value) {
      return apiKeyStore.currentUser?.name
    }
    return firebaseUser.value?.displayName
  })

  const userEmail = computed(() => {
    if (isApiKeyLogin.value) {
      return apiKeyStore.currentUser?.email
    }
    return firebaseUser.value?.email
  })

  const providerName = computed(() => {
    if (isApiKeyLogin.value) {
      return 'Comfy API Key'
    }

    const providerId = firebaseUser.value?.providerData[0]?.providerId
    if (providerId?.includes('google')) {
      return 'Google'
    }
    if (providerId?.includes('github')) {
      return 'GitHub'
    }
    return providerId
  })

  const providerIcon = computed(() => {
    if (isApiKeyLogin.value) {
      return 'pi pi-key'
    }

    const providerId = firebaseUser.value?.providerData[0]?.providerId
    if (providerId?.includes('google')) {
      return 'pi pi-google'
    }
    if (providerId?.includes('github')) {
      return 'pi pi-github'
    }
    return 'pi pi-user'
  })

  const isEmailProvider = computed(() => {
    if (isApiKeyLogin.value) {
      return false
    }

    const providerId = firebaseUser.value?.providerData[0]?.providerId
    return providerId === 'password'
  })

  const userPhotoUrl = computed(() => {
    if (isApiKeyLogin.value) return null
    return firebaseUser.value?.photoURL
  })

  const handleSignOut = async () => {
    if (isApiKeyLogin.value) {
      await apiKeyStore.clearStoredApiKey()
    } else {
      await commandStore.execute('Comfy.User.SignOut')
    }
  }

  const handleSignIn = async () => {
    await commandStore.execute('Comfy.User.OpenSignInDialog')
  }

  return {
    loading: authStore.loading,
    isLoggedIn,
    isApiKeyLogin,
    isEmailProvider,
    userDisplayName,
    userEmail,
    userPhotoUrl,
    providerName,
    providerIcon,
    handleSignOut,
    handleSignIn
  }
}