<script lang="ts" setup>
import { Form, Modal, message } from 'ant-design-vue'
import type { SelectHandler } from 'ant-design-vue/es/vc-select/Select'
import {
  CertTypes,
  SSLUsage,
  clientTypes,
  computed,
  extractSdkResponseErrorMsg,
  fieldRequiredValidator,
  generateUniqueName,
  getDefaultConnectionConfig,
  getTestDatabaseName,
  navigateTo,
  nextTick,
  onMounted,
  projectTitleValidator,
  readFile,
  ref,
  useApi,
  useI18n,
  useNuxtApp,
  useSidebar,
  watch,
} from '#imports'
import { ClientType } from '~/lib'
import { DefaultConnection, SQLiteConnection } from '~/utils'
import type { ProjectCreateForm } from '~/utils'

const useForm = Form.useForm

const testSuccess = ref(false)

const form = ref<typeof Form>()

const { api, isLoading } = useApi()

const { $e } = useNuxtApp()

useSidebar({ hasSidebar: false })

const { t } = useI18n()

let formState = $ref<ProjectCreateForm>({
  title: '',
  dataSource: { ...getDefaultConnectionConfig(ClientType.MYSQL) },
  inflection: {
    inflectionColumn: 'camelize',
    inflectionTable: 'camelize',
  },
  sslUse: SSLUsage.No,
  extraParameters: [],
})

const customFormState = ref<ProjectCreateForm>({
  title: '',
  dataSource: { ...getDefaultConnectionConfig(ClientType.MYSQL) },
  inflection: {
    inflectionColumn: 'camelize',
    inflectionTable: 'camelize',
  },
  sslUse: SSLUsage.No,
  extraParameters: [],
})

const validators = computed(() => {
  return {
    'title': [
      {
        required: true,
        message: 'Project name is required',
      },
      projectTitleValidator,
    ],
    'extraParameters': [extraParameterValidator],
    'dataSource.client': [fieldRequiredValidator],
    ...(formState.dataSource.client === ClientType.SQLITE
      ? {
          'dataSource.connection.connection.filename': [fieldRequiredValidator],
        }
      : {
          'dataSource.connection.host': [fieldRequiredValidator],
          'dataSource.connection.port': [fieldRequiredValidator],
          'dataSource.connection.user': [fieldRequiredValidator],
          'dataSource.connection.password': [fieldRequiredValidator],
          'dataSource.connection.database': [fieldRequiredValidator],
          ...([ClientType.PG, ClientType.MSSQL].includes(formState.dataSource.client)
            ? {
                'dataSource.searchPath.0': [fieldRequiredValidator],
              }
            : {}),
        }),
  }
})

const { validate, validateInfos } = useForm(formState, validators)

const populateName = (v: string) => {
  formState.dataSource.connection.database = `${v.trim()}_noco`
}

const onClientChange = () => {
  formState.dataSource = { ...getDefaultConnectionConfig(formState.dataSource.client) }
  populateName(formState.title)
}

const onSSLModeChange = ((mode: SSLUsage) => {
  if (formState.dataSource.client !== ClientType.SQLITE) {
    const connection = formState.dataSource.connection as DefaultConnection
    switch (mode) {
      case SSLUsage.No:
        delete connection.ssl
        break
      case SSLUsage.Allowed:
        connection.ssl = 'true'
        break
      default:
        connection.ssl = {
          ca: '',
          cert: '',
          key: '',
        }
        break
    }
  }
}) as SelectHandler

const updateSSLUse = () => {
  if (formState.dataSource.client !== ClientType.SQLITE) {
    const connection = formState.dataSource.connection as DefaultConnection
    if (connection.ssl) {
      if (typeof connection.ssl === 'string') {
        formState.sslUse = SSLUsage.Allowed
      } else {
        formState.sslUse = SSLUsage.Preferred
      }
    } else {
      formState.sslUse = SSLUsage.No
    }
  }
}

const addNewParam = () => {
  formState.extraParameters.push({ key: '', value: '' })
}

const removeParam = (index: number) => {
  formState.extraParameters.splice(index, 1)
}

const inflectionTypes = ['camelize', 'none']
const importURL = ref('')
const configEditDlg = ref(false)
const importURLDlg = ref(false)

const caFileInput = ref<HTMLInputElement>()
const keyFileInput = ref<HTMLInputElement>()
const certFileInput = ref<HTMLInputElement>()

const onFileSelect = (key: CertTypes, el?: HTMLInputElement) => {
  if (!el) return

  readFile(el, (content) => {
    if ('ssl' in formState.dataSource.connection && typeof formState.dataSource.connection.ssl === 'object')
      formState.dataSource.connection.ssl[key] = content ?? ''
  })
}

const sslFilesRequired = computed(
  () => !!formState.sslUse && formState.sslUse !== SSLUsage.No && formState.sslUse !== SSLUsage.Allowed,
)

function getConnectionConfig() {
  const extraParameters = Object.fromEntries(new Map(formState.extraParameters.map((object) => [object.key, object.value])))

  const connection = {
    ...formState.dataSource.connection,
    ...extraParameters,
  }

  if ('ssl' in connection && connection.ssl) {
    if (
      formState.sslUse === SSLUsage.No ||
      (typeof connection.ssl === 'object' && Object.values(connection.ssl).every((v) => !v))
    ) {
      delete connection.ssl
    }
  }
  return connection
}

const focusInvalidInput = () => {
  form.value?.$el.querySelector('.ant-form-item-explain-error')?.parentNode?.parentNode?.querySelector('input')?.focus()
}

const createProject = async () => {
  try {
    await validate()
  } catch (e) {
    focusInvalidInput()
    return
  }

  try {
    const connection = getConnectionConfig()

    const config = { ...formState.dataSource, connection }

    const result = await api.project.create({
      title: formState.title,
      bases: [
        {
          type: formState.dataSource.client,
          config,
          inflection_column: formState.inflection.inflectionColumn,
          inflection_table: formState.inflection.inflectionTable,
        },
      ],
      external: true,
    })

    $e('a:project:create:extdb')

    await navigateTo(`/nc/${result.id}`)
  } catch (e: any) {
    message.error(await extractSdkResponseErrorMsg(e))
  }
}

const testConnection = async () => {
  try {
    await validate()
  } catch (e) {
    focusInvalidInput()
    return
  }

  $e('a:project:create:extdb:test-connection', [])

  try {
    if (formState.dataSource.client === ClientType.SQLITE) {
      testSuccess.value = true
    } else {
      const connection = getConnectionConfig()

      connection.database = getTestDatabaseName(formState.dataSource)!

      const testConnectionConfig = {
        ...formState.dataSource,
        connection,
      }

      const result = await api.utils.testConnection(testConnectionConfig)

      if (result.code === 0) {
        testSuccess.value = true

        Modal.confirm({
          title: t('msg.info.dbConnected'),
          icon: null,
          type: 'success',

          okText: t('activity.OkSaveProject'),
          okType: 'primary',
          cancelText: t('general.cancel'),
          onOk: createProject,
        })
      } else {
        testSuccess.value = false

        message.error(`${t('msg.error.dbConnectionFailed')} ${result.message}`)
      }
    }
  } catch (e: any) {
    testSuccess.value = false

    message.error(await extractSdkResponseErrorMsg(e))
  }
}

const handleImportURL = async () => {
  if (!importURL.value || importURL.value === '') return

  const connectionConfig = await api.utils.urlToConfig({ url: importURL.value })

  if (connectionConfig) {
    formState.dataSource.client = connectionConfig.client
    formState.dataSource.connection = { ...connectionConfig.connection }
  } else {
    message.error(t('msg.error.invalidURL'))
  }
  importURLDlg.value = false
  updateSSLUse()
}

const handleEditJSON = () => {
  customFormState.value = { ...formState }
  configEditDlg.value = true
}

const handleOk = () => {
  formState = { ...customFormState.value }
  configEditDlg.value = false
  updateSSLUse()
}

// reset test status on config change
watch(
  () => formState.dataSource,
  () => (testSuccess.value = false),
  { deep: true },
)

// populate database name based on title
watch(
  () => formState.title,
  (v) => populateName(v),
)

// select and focus title field on load
onMounted(() => {
  formState.title = generateUniqueName()
  nextTick(() => {
    // todo: replace setTimeout and follow better approach
    setTimeout(() => {
      const input = form.value?.$el?.querySelector('input[type=text]')
      input.setSelectionRange(0, formState.title.length)
      input.focus()
    }, 500)
  })
})
</script>

<template>
  <div
    class="create-external bg-white relative flex flex-col justify-center gap-2 w-full p-8 md:(rounded-lg border-1 border-gray-200 shadow-xl)"
  >
    <general-noco-icon class="color-transition hover:(ring ring-accent)" :class="[isLoading ? 'animated-bg-gradient' : '']" />

    <div
      class="color-transition transform group absolute top-5 left-5 text-4xl rounded-full bg-white cursor-pointer"
      @click="navigateTo('/')"
    >
      <MdiChevronLeft class="text-black group-hover:(text-accent scale-110)" />
    </div>

    <h1 class="prose-2xl font-bold self-center my-4">{{ $t('activity.createProject') }}</h1>

    <a-form
      ref="form"
      :model="formState"
      name="external-project-create-form"
      layout="horizontal"
      no-style
      :label-col="{ span: 8 }"
    >
      <a-form-item :label="$t('placeholder.projName')" v-bind="validateInfos.title">
        <a-input v-model:value="formState.title" class="nc-extdb-proj-name" />
      </a-form-item>

      <a-form-item :label="$t('labels.dbType')" v-bind="validateInfos['dataSource.client']">
        <a-select v-model:value="formState.dataSource.client" class="nc-extdb-db-type" @change="onClientChange">
          <a-select-option v-for="client in clientTypes" :key="client.value" :value="client.value"
            >{{ client.text }}
          </a-select-option>
        </a-select>
      </a-form-item>

      <!-- SQLite File -->
      <a-form-item
        v-if="formState.dataSource.client === ClientType.SQLITE"
        :label="$t('labels.sqliteFile')"
        v-bind="validateInfos['dataSource.connection.connection.filename']"
      >
        <a-input v-model:value="(formState.dataSource.connection as SQLiteConnection).connection.filename" />
      </a-form-item>

      <template v-else>
        <!-- Host Address -->
        <a-form-item :label="$t('labels.hostAddress')" v-bind="validateInfos['dataSource.connection.host']">
          <a-input v-model:value="(formState.dataSource.connection as DefaultConnection).host" class="nc-extdb-host-address" />
        </a-form-item>

        <!-- Port Number -->
        <a-form-item :label="$t('labels.port')" v-bind="validateInfos['dataSource.connection.port']">
          <a-input-number
            v-model:value="(formState.dataSource.connection as DefaultConnection).port"
            class="!w-full nc-extdb-host-port"
          />
        </a-form-item>

        <!-- Username -->
        <a-form-item :label="$t('labels.username')" v-bind="validateInfos['dataSource.connection.user']">
          <a-input v-model:value="(formState.dataSource.connection as DefaultConnection).user" class="nc-extdb-host-user" />
        </a-form-item>

        <!-- Password -->
        <a-form-item :label="$t('labels.password')">
          <a-input-password
            v-model:value="(formState.dataSource.connection as DefaultConnection).password"
            class="nc-extdb-host-password"
          />
        </a-form-item>

        <!-- Database -->
        <a-form-item :label="$t('labels.database')" v-bind="validateInfos['dataSource.connection.database']">
          <!-- Database : create if not exists -->
          <a-input
            v-model:value="formState.dataSource.connection.database"
            :placeholder="$t('labels.dbCreateIfNotExists')"
            class="nc-extdb-host-database"
          />
        </a-form-item>

        <!-- Schema name -->
        <a-form-item
          v-if="[ClientType.MSSQL, ClientType.PG].includes(formState.dataSource.client) && formState.dataSource.searchPath"
          :label="$t('labels.schemaName')"
          v-bind="validateInfos['dataSource.searchPath.0']"
        >
          <a-input v-model:value="formState.dataSource.searchPath[0]" />
        </a-form-item>

        <a-collapse ghost expand-icon-position="right" class="!mt-6">
          <a-collapse-panel key="1">
            <template #header>
              <div class="flex items-center gap-2">
                <!--                Use Connection URL -->
                <a-button type="default" class="nc-extdb-btn-import-url" @click.stop="importURLDlg = true">
                  {{ $t('activity.useConnectionUrl') }}
                </a-button>
                <span>{{ $t('title.advancedParameters') }}</span>
              </div>
            </template>
            <a-form-item label="SSL mode">
              <a-select v-model:value="formState.sslUse" @select="onSSLModeChange">
                <a-select-option v-for="opt in Object.values(SSLUsage)" :key="opt" :value="opt">{{ opt }}</a-select-option>
              </a-select>
            </a-form-item>

            <a-form-item label="SSL keys">
              <div class="flex gap-2">
                <a-tooltip placement="top">
                  <!-- Select .cert file -->
                  <template #title>
                    <span>{{ $t('tooltip.clientCert') }}</span>
                  </template>

                  <a-button :disabled="!sslFilesRequired" class="shadow" @click="certFileInput?.click()">
                    {{ $t('labels.clientCert') }}
                  </a-button>
                </a-tooltip>

                <a-tooltip placement="top">
                  <!-- Select .key file -->
                  <template #title>
                    <span>{{ $t('tooltip.clientKey') }}</span>
                  </template>
                  <a-button :disabled="!sslFilesRequired" class="shadow" @click="keyFileInput?.click()">
                    {{ $t('labels.clientKey') }}
                  </a-button>
                </a-tooltip>

                <a-tooltip placement="top">
                  <!-- Select CA file -->
                  <template #title>
                    <span>{{ $t('tooltip.clientCA') }}</span>
                  </template>

                  <a-button :disabled="!sslFilesRequired" class="shadow" @click="caFileInput?.click()">
                    {{ $t('labels.serverCA') }}
                  </a-button>
                </a-tooltip>
              </div>
            </a-form-item>

            <input ref="caFileInput" type="file" class="!hidden" @change="onFileSelect(CertTypes.ca, caFileInput)" />

            <input ref="certFileInput" type="file" class="!hidden" @change="onFileSelect(CertTypes.cert, certFileInput)" />

            <input ref="keyFileInput" type="file" class="!hidden" @change="onFileSelect(CertTypes.key, keyFileInput)" />

            <a-divider />

            <!--            Extra connection parameters -->
            <a-form-item class="mb-2" :label="$t('labels.extraConnectionParameters')" v-bind="validateInfos.extraParameters">
              <a-card>
                <div v-for="(item, index) of formState.extraParameters" :key="index">
                  <div class="flex py-1 items-center gap-1">
                    <a-input v-model:value="item.key" />

                    <span>:</span>

                    <a-input v-model:value="item.value" />

                    <MdiClose :style="{ 'font-size': '1.5em', 'color': 'red' }" @click="removeParam(index)" />
                  </div>
                </div>
                <a-button type="dashed" class="w-full caption mt-2" @click="addNewParam">
                  <div class="flex items-center justify-center"><MdiPlus /></div>
                </a-button>
              </a-card>
            </a-form-item>

            <a-divider />

            <a-form-item :label="$t('labels.inflection.tableName')">
              <a-select v-model:value="formState.inflection.inflectionTable">
                <a-select-option v-for="type in inflectionTypes" :key="type" :value="type">{{ type }}</a-select-option>
              </a-select>
            </a-form-item>

            <a-form-item :label="$t('labels.inflection.columnName')">
              <a-select v-model:value="formState.inflection.inflectionColumn">
                <a-select-option v-for="type in inflectionTypes" :key="type" :value="type">{{ type }}</a-select-option>
              </a-select>
            </a-form-item>

            <div class="flex justify-end">
              <a-button class="!shadow-md" @click="handleEditJSON()">
                <!-- Edit connection JSON -->
                {{ $t('activity.editConnJson') }}
              </a-button>
            </div>
          </a-collapse-panel>
        </a-collapse>
      </template>

      <a-form-item class="flex justify-center !mt-5">
        <div class="flex justify-center gap-2">
          <a-button type="primary" ghost class="nc-extdb-btn-test-connection" @click="testConnection">
            {{ $t('activity.testDbConn') }}
          </a-button>

          <a-button type="primary" :disabled="!testSuccess" class="nc-extdb-btn-submit !shadow" @click="createProject">
            {{ $t('general.submit') }}
          </a-button>
        </div>
      </a-form-item>
    </a-form>

    <a-modal v-model:visible="configEditDlg" :title="$t('activity.editConnJson')" width="600px" @ok="handleOk">
      <MonacoEditor v-if="configEditDlg" v-model="customFormState" class="h-[400px] w-full" />
    </a-modal>

    <!--    Use Connection URL -->
    <a-modal
      v-model:visible="importURLDlg"
      :title="$t('activity.useConnectionUrl')"
      width="600px"
      :ok-text="$t('general.ok')"
      :cancel-text="$t('general.cancel')"
      @ok="handleImportURL"
    >
      <a-input v-model:value="importURL" />
    </a-modal>
  </div>
</template>

<style lang="scss" scoped>
:deep(.ant-collapse-header) {
  @apply !pr-10 !-mt-4 text-right justify-end;
}

:deep(.ant-collapse-content-box) {
  @apply !px-0;
}

:deep(.ant-form-item-explain-error) {
  @apply !text-xs;
}

:deep(.ant-form-item) {
  @apply mb-2;
}

:deep(.ant-form-item-with-help .ant-form-item-explain) {
  @apply !min-h-0;
}

.create-external {
  :deep(.ant-input-affix-wrapper),
  :deep(.ant-input),
  :deep(.ant-select) {
    @apply !appearance-none border-1 border-solid rounded;
  }

  :deep(.ant-input-password) {
    input {
      @apply !border-none my-0;
    }
  }
}
</style>
