<!-- ❗Errors in the form are set on line 60 -->
<script setup lang="ts">
import { VForm } from 'vuetify/components/VForm'
import AuthProvider from '@/views/pages/authentication/AuthProvider.vue'
import { useGenerateImageVariant } from '@core/composable/useGenerateImageVariant'
import authV2LoginIllustrationBorderedDark from '@images/pages/auth-v2-login-illustration-bordered-dark.png'
import authV2LoginIllustrationBorderedLight from '@images/pages/auth-v2-login-illustration-bordered-light.png'
import authV2LoginIllustrationDark from '@images/pages/auth-v2-login-illustration-dark.png'
import authV2LoginIllustrationLight from '@images/pages/auth-v2-login-illustration-light.png'
import authV2MaskDark from '@images/pages/misc-mask-dark.png'
import authV2MaskLight from '@images/pages/misc-mask-light.png'
import { VNodeRenderer } from '@layouts/components/VNodeRenderer'
import { themeConfig } from '@themeConfig'

const authThemeImg = useGenerateImageVariant(authV2LoginIllustrationLight, authV2LoginIllustrationDark, authV2LoginIllustrationBorderedLight, authV2LoginIllustrationBorderedDark, true)

const authThemeMask = useGenerateImageVariant(authV2MaskLight, authV2MaskDark)

definePage({
  meta: {
    layout: 'blank',
    unauthenticatedOnly: true,
  },
})

const isPasswordVisible = ref(false)

const route = useRoute()
const router = useRouter()

const ability = useAbility()

const errors = ref<Record<string, string | undefined>>({
  email: undefined,
  password: undefined,
})

const refVForm = ref<VForm>()

const credentials = ref({
  email: '',
  password: '',
})

const rememberMe = ref(false)

const login = async () => {
  try {
    const res = await $api('/auth/login', {
      method: 'POST',
      body: {
        email: credentials.value.email,
        password: credentials.value.password,
      },
      onResponseError({ response }) {
        // Handle validation errors from our API
        if (response._data?.errors) {
          errors.value = {
            email: response._data.errors.email?.[0],
            password: response._data.errors.password?.[0],
          }
        }
        else if (response._data?.message) {
          errors.value = { email: response._data.message }
        }
      },
    })

    // Handle our API response format: { success, data: { user, token }, message }
    const { data } = res
    const userData = data.user
    const accessToken = data.token

    // Set ability rules based on user role
    const userAbilityRules = getUserAbilityRules(userData.role)

    useCookie('userAbilityRules').value = userAbilityRules
    ability.update(userAbilityRules)

    useCookie('userData').value = userData
    useCookie('accessToken').value = accessToken

    // Redirect to `to` query if exist or redirect to index route
    await nextTick()
    router.replace(route.query.to ? String(route.query.to) : '/')
  }
  catch (err) {
    console.error(err)
  }
}

// Generate ability rules based on user role
function getUserAbilityRules(role: string | null) {
  // Admin can do everything
  if (role === 'admin') {
    return [{ action: 'manage', subject: 'all' }]
  }

  // Booking agent can manage events and customers
  if (role === 'booking_agent') {
    return [
      { action: 'read', subject: 'all' },
      { action: 'manage', subject: 'Event' },
      { action: 'manage', subject: 'Customer' },
      { action: 'manage', subject: 'Location' },
      { action: 'manage', subject: 'BookingRequest' },
    ]
  }

  // Music manager can manage music and setlists
  if (role === 'music_manager') {
    return [
      { action: 'read', subject: 'all' },
      { action: 'manage', subject: 'MusicNumber' },
      { action: 'manage', subject: 'Setlist' },
    ]
  }

  // Default member permissions
  return [
    { action: 'read', subject: 'Event' },
    { action: 'read', subject: 'MusicNumber' },
    { action: 'read', subject: 'Setlist' },
    { action: 'manage', subject: 'User', conditions: { id: '{{ user.id }}' } },
  ]
}

const onSubmit = () => {
  refVForm.value?.validate()
    .then(({ valid: isValid }) => {
      if (isValid)
        login()
    })
}
</script>

<template>
  <RouterLink to="/">
    <div class="auth-logo d-flex align-center gap-x-3">
      <VNodeRenderer :nodes="themeConfig.app.logo" />
      <h1 class="auth-title">
        {{ themeConfig.app.title }}
      </h1>
    </div>
  </RouterLink>

  <VRow
    no-gutters
    class="auth-wrapper bg-surface"
  >
    <VCol
      md="8"
      class="d-none d-md-flex"
    >
      <div class="position-relative bg-background w-100 me-0">
        <div
          class="d-flex align-center justify-center w-100 h-100"
          style="padding-inline: 6.25rem;"
        >
          <VImg
            max-width="613"
            :src="authThemeImg"
            class="auth-illustration mt-16 mb-2"
          />
        </div>

        <img
          class="auth-footer-mask"
          :src="authThemeMask"
          alt="auth-footer-mask"
          height="280"
          width="100"
        >
      </div>
    </VCol>

    <VCol
      cols="12"
      md="4"
      class="auth-card-v2 d-flex align-center justify-center"
    >
      <VCard
        flat
        :max-width="500"
        class="mt-12 mt-sm-0 pa-4"
      >
        <VCardText>
          <h4 class="text-h4 mb-1">
            Welcome to <span class="text-capitalize"> {{ themeConfig.app.title }} </span>! 👋🏻
          </h4>
          <p class="mb-0">
            Please sign-in to your account and start the adventure
          </p>
        </VCardText>
        <VCardText>
          <VForm
            ref="refVForm"
            @submit.prevent="onSubmit"
          >
            <VRow>
              <!-- email -->
              <VCol cols="12">
                <AppTextField
                  v-model="credentials.email"
                  label="Email"
                  placeholder="johndoe@email.com"
                  type="email"
                  autofocus
                  :rules="[requiredValidator, emailValidator]"
                  :error-messages="errors.email"
                />
              </VCol>

              <!-- password -->
              <VCol cols="12">
                <AppTextField
                  v-model="credentials.password"
                  label="Password"
                  placeholder="············"
                  :rules="[requiredValidator]"
                  :type="isPasswordVisible ? 'text' : 'password'"
                  autocomplete="password"
                  :error-messages="errors.password"
                  :append-inner-icon="isPasswordVisible ? 'tabler-eye-off' : 'tabler-eye'"
                  @click:append-inner="isPasswordVisible = !isPasswordVisible"
                />

                <div class="d-flex align-center flex-wrap justify-space-between my-6">
                  <VCheckbox
                    v-model="rememberMe"
                    label="Remember me"
                  />
                  <RouterLink
                    class="text-primary ms-2 mb-1"
                    :to="{ name: 'forgot-password' }"
                  >
                    Forgot Password?
                  </RouterLink>
                </div>

                <VBtn
                  block
                  type="submit"
                >
                  Login
                </VBtn>
              </VCol>

              <!-- create account -->
              <VCol
                cols="12"
                class="text-center"
              >
                <span>New on our platform?</span>
                <RouterLink
                  class="text-primary ms-1"
                  :to="{ name: 'register' }"
                >
                  Create an account
                </RouterLink>
              </VCol>
              <VCol
                cols="12"
                class="d-flex align-center"
              >
                <VDivider />
                <span class="mx-4">or</span>
                <VDivider />
              </VCol>

              <!-- auth providers -->
              <VCol
                cols="12"
                class="text-center"
              >
                <AuthProvider />
              </VCol>
            </VRow>
          </VForm>
        </VCardText>
      </VCard>
    </VCol>
  </VRow>
</template>

<style lang="scss">
@use "@core/scss/template/pages/page-auth";
</style>
