import { RelationTypes, isLinksOrLTAR } from 'nocodb-sdk'
import type { ColumnType, LinkToAnotherRecordType, TableType } from 'nocodb-sdk'
import type { Ref } from 'vue'
import type { MaybeRef } from '@vueuse/core'
import {
  NOCO,
  computed,
  deepCompare,
  extractPkFromRow,
  extractSdkResponseErrorMsg,
  isBt,
  isHm,
  isMm,
  message,
  ref,
  storeToRefs,
  unref,
  useI18n,
  useInjectionState,
  useMetas,
  useNuxtApp,
  useProject,
} from '#imports'
import type { Row } from '~/lib'

const [useProvideSmartsheetRowStore, useSmartsheetRowStore] = useInjectionState(
  (meta: Ref<TableType | undefined>, row: MaybeRef<Row>) => {
    const { $api } = useNuxtApp()

    const { t } = useI18n()

    const { project } = storeToRefs(useProject())

    const { metas } = useMetas()

    const currentRow = ref(row)

    // state
    const state = ref<Record<string, Record<string, any> | Record<string, any>[] | null>>({})

    // getters
    const isNew = computed(() => unref(row).rowMeta.new ?? false)

    // actions
    const addLTARRef = async (value: Record<string, any>, column: ColumnType) => {
      if (isHm(column) || isMm(column)) {
        if (!state.value[column.title!]) state.value[column.title!] = []

        if (state.value[column.title!]!.find((ln: Record<string, any>) => deepCompare(ln, value))) {
          // This value is already in the list
          return message.info(t('msg.info.valueAlreadyInList'))
        }

        if (Array.isArray(value)) {
          state.value[column.title!]!.push(...value)
        } else {
          state.value[column.title!]!.push(value)
        }
      } else if (isBt(column)) {
        state.value[column.title!] = value
      }
    }

    // actions
    const removeLTARRef = async (value: Record<string, any>, column: ColumnType) => {
      if (isHm(column) || isMm(column)) {
        state.value[column.title!]?.splice(state.value[column.title!]?.indexOf(value), 1)
      } else if (isBt(column)) {
        state.value[column.title!] = null
      }
    }

    const linkRecord = async (
      rowId: string,
      relatedRowId: string,
      column: ColumnType,
      type: RelationTypes,
      { metaValue = meta.value }: { metaValue?: TableType } = {},
    ) => {
      try {
        await $api.dbTableRow.nestedAdd(
          NOCO,
          project.value.id as string,
          metaValue?.id as string,
          rowId,
          type as 'mm' | 'hm',
          column.id as string,
          relatedRowId,
        )
      } catch (e: any) {
        message.error(await extractSdkResponseErrorMsg(e))
      }
    }

    /** sync LTAR relations kept in local state */
    const syncLTARRefs = async (row: Record<string, any>, { metaValue = meta.value }: { metaValue?: TableType } = {}) => {
      const id = extractPkFromRow(row, metaValue?.columns as ColumnType[])
      for (const column of metaValue?.columns ?? []) {
        if (!isLinksOrLTAR(column)) continue

        const colOptions = column.colOptions as LinkToAnotherRecordType

        const relatedTableMeta = metas.value?.[colOptions?.fk_related_model_id as string]

        if (isHm(column) || isMm(column)) {
          const relatedRows = (state.value?.[column.title!] ?? []) as Record<string, any>[]

          for (const relatedRow of relatedRows) {
            await linkRecord(
              id,
              extractPkFromRow(relatedRow, relatedTableMeta.columns as ColumnType[]),
              column,
              colOptions.type as RelationTypes,
              { metaValue },
            )
          }
        } else if (isBt(column) && state.value?.[column.title!]) {
          await linkRecord(
            id,
            extractPkFromRow(state.value?.[column.title!] as Record<string, any>, relatedTableMeta.columns as ColumnType[]),
            column,
            colOptions.type as RelationTypes,
            { metaValue },
          )
        }

        // clear LTAR refs after sync
        state.value[column.title!] = null
      }
    }

    // clear LTAR cell
    const clearLTARCell = async (column: ColumnType) => {
      try {
        if (!column || !isLinksOrLTAR(column)) return

        const relatedTableMeta = metas.value?.[(<LinkToAnotherRecordType>column?.colOptions)?.fk_related_model_id as string]

        if (isNew.value) {
          state.value[column.title!] = null
        } else if (currentRow.value) {
          if ((<LinkToAnotherRecordType>column.colOptions)?.type === RelationTypes.BELONGS_TO) {
            if (!currentRow.value.row[column.title!]) return
            await $api.dbTableRow.nestedRemove(
              NOCO,
              project.value.id as string,
              meta.value?.id as string,
              extractPkFromRow(currentRow.value.row, meta.value?.columns as ColumnType[]),
              'bt' as any,
              column.id as string,
              extractPkFromRow(currentRow.value.row[column.title!], relatedTableMeta?.columns as ColumnType[]),
            )
            currentRow.value.row[column.title!] = null
          } else {
            for (const link of (currentRow.value.row[column.title!] as Record<string, any>[]) || []) {
              await $api.dbTableRow.nestedRemove(
                NOCO,
                project.value.id as string,
                meta.value?.id as string,
                extractPkFromRow(currentRow.value.row, meta.value?.columns as ColumnType[]),
                (<LinkToAnotherRecordType>column?.colOptions).type as 'hm' | 'mm',
                column.id as string,
                extractPkFromRow(link, relatedTableMeta?.columns as ColumnType[]),
              )
            }
            currentRow.value.row[column.title!] = []
          }
        }
      } catch (e: any) {
        message.error(await extractSdkResponseErrorMsg(e))
      }
    }

    const loadRow = async () => {
      const record = await $api.dbTableRow.read(
        NOCO,
        project.value?.id as string,
        meta.value?.title as string,
        extractPkFromRow(unref(row)?.row, meta.value?.columns as ColumnType[]),
      )
      Object.assign(unref(row), {
        row: record,
        oldRow: { ...record },
        rowMeta: {},
      })
    }

    return {
      row,
      state,
      isNew,
      // todo: use better name
      addLTARRef,
      removeLTARRef,
      syncLTARRefs,
      loadRow,
      currentRow,
      clearLTARCell,
    }
  },
  'smartsheet-row-store',
)

export { useProvideSmartsheetRowStore }

export function useSmartsheetRowStoreOrThrow() {
  const smartsheetRowStore = useSmartsheetRowStore()

  if (smartsheetRowStore == null) throw new Error('Please call `useSmartsheetRowStore` on the appropriate parent component')

  return smartsheetRowStore
}