import { useToast } from 'primevue/usetoast'
import { inject } from 'vue'
import { useI18n } from 'vue-i18n'

import ConfirmationDialogContent from '@/components/dialog/content/ConfirmationDialogContent.vue'
import { downloadFile } from '@/base/common/downloadUtil'
import { useCopyToClipboard } from '@/composables/useCopyToClipboard'
import { isCloud } from '@/platform/distribution/types'
import { useWorkflowActionsService } from '@/platform/workflow/core/services/workflowActionsService'
import { extractWorkflowFromAsset } from '@/platform/workflow/utils/workflowExtractionUtil'
import { api } from '@/scripts/api'
import { useLitegraphService } from '@/services/litegraphService'
import { useNodeDefStore } from '@/stores/nodeDefStore'
import { getOutputAssetMetadata } from '../schemas/assetMetadataSchema'
import { useAssetsStore } from '@/stores/assetsStore'
import { useDialogStore } from '@/stores/dialogStore'
import { getAssetType } from '../utils/assetTypeUtil'
import { getAssetUrl } from '../utils/assetUrlUtil'
import { createAnnotatedPath } from '@/utils/createAnnotatedPath'
import { detectNodeTypeFromFilename } from '@/utils/loaderNodeUtil'
import { isResultItemType } from '@/utils/typeGuardUtil'

import type { AssetItem } from '../schemas/assetSchema'
import { MediaAssetKey } from '../schemas/mediaAssetSchema'
import { assetService } from '../services/assetService'

export function useMediaAssetActions() {
  const { t } = useI18n()
  const toast = useToast()
  const dialogStore = useDialogStore()
  const mediaContext = inject(MediaAssetKey, null)
  const { copyToClipboard } = useCopyToClipboard()
  const workflowActions = useWorkflowActionsService()
  const litegraphService = useLitegraphService()
  const nodeDefStore = useNodeDefStore()

  /**
   * Internal helper to perform the API deletion for a single asset
   * Handles both output assets (via history API) and input assets (via asset service)
   * @throws Error if deletion fails or is not allowed
   */
  const deleteAssetApi = async (
    asset: AssetItem,
    assetType: string
  ): Promise<void> => {
    if (assetType === 'output') {
      const promptId =
        asset.id || getOutputAssetMetadata(asset.user_metadata)?.promptId
      if (!promptId) {
        throw new Error('Unable to extract prompt ID from asset')
      }
      await api.deleteItem('history', promptId)
    } else {
      // Input assets can only be deleted in cloud environment
      if (!isCloud) {
        throw new Error(t('mediaAsset.deletingImportedFilesCloudOnly'))
      }
      await assetService.deleteAsset(asset.id)
    }
  }

  const downloadAsset = (asset?: AssetItem) => {
    const targetAsset = asset ?? mediaContext?.asset.value
    if (!targetAsset) return

    try {
      const filename = targetAsset.name
      let downloadUrl: string

      // In cloud, use preview_url directly (from cloud storage)
      // In OSS/localhost, use the /view endpoint
      if (isCloud && targetAsset.preview_url) {
        downloadUrl = targetAsset.preview_url
      } else {
        downloadUrl = getAssetUrl(targetAsset)
      }

      downloadFile(downloadUrl, filename)

      toast.add({
        severity: 'success',
        summary: t('g.success'),
        detail: t('mediaAsset.selection.downloadsStarted', { count: 1 }),
        life: 2000
      })
    } catch (error) {
      toast.add({
        severity: 'error',
        summary: t('g.error'),
        detail: t('g.failedToDownloadImage'),
        life: 3000
      })
    }
  }

  /**
   * Download multiple assets at once
   * @param assets Array of assets to download
   */
  const downloadMultipleAssets = (assets: AssetItem[]) => {
    if (!assets || assets.length === 0) return

    try {
      assets.forEach((asset) => {
        const filename = asset.name
        let downloadUrl: string

        // In cloud, use preview_url directly (from GCS or other cloud storage)
        // In OSS/localhost, use the /view endpoint
        if (isCloud && asset.preview_url) {
          downloadUrl = asset.preview_url
        } else {
          downloadUrl = getAssetUrl(asset)
        }
        downloadFile(downloadUrl, filename)
      })

      toast.add({
        severity: 'success',
        summary: t('g.success'),
        detail: t('mediaAsset.selection.downloadsStarted', {
          count: assets.length
        }),
        life: 2000
      })
    } catch (error) {
      console.error('Failed to download assets:', error)
      toast.add({
        severity: 'error',
        summary: t('g.error'),
        detail: t('g.failedToDownloadImage'),
        life: 3000
      })
    }
  }

  /**
   * Show confirmation dialog and delete asset if confirmed
   * @param asset The asset to delete
   * @param onDeleting Optional callback called with true when deletion starts and false when complete
   * @returns true if the asset was deleted, false otherwise
   */
  const confirmDelete = async (
    asset: AssetItem,
    onDeleting?: (deleting: boolean) => void
  ): Promise<boolean> => {
    return deleteMultipleAssets([asset], onDeleting)
  }

  /**
   * Delete a single asset with confirmation
   * @param asset The asset to delete
   * @param onDeleting Optional callback called with true when deletion starts and false when complete
   * @returns true if the asset was deleted, false otherwise
   */
  const deleteAsset = async (
    asset: AssetItem,
    onDeleting?: (deleting: boolean) => void
  ): Promise<boolean> => {
    return deleteMultipleAssets([asset], onDeleting)
  }

  const copyJobId = async (asset?: AssetItem) => {
    const targetAsset = asset ?? mediaContext?.asset.value
    if (!targetAsset) return

    // Try asset.id first (OSS), then fall back to metadata (Cloud)
    const metadata = getOutputAssetMetadata(targetAsset.user_metadata)
    const promptId = targetAsset.id || metadata?.promptId

    if (!promptId) {
      toast.add({
        severity: 'warn',
        summary: t('g.warning'),
        detail: t('mediaAsset.noJobIdFound'),
        life: 2000
      })
      return
    }

    await copyToClipboard(promptId)
  }

  /**
   * Add a loader node to the current workflow for this asset
   * Uses shared utility to detect appropriate node type based on file extension
   */
  const addWorkflow = async (asset?: AssetItem) => {
    const targetAsset = asset ?? mediaContext?.asset.value
    if (!targetAsset) return

    // Detect node type using shared utility
    const { nodeType, widgetName } = detectNodeTypeFromFilename(
      targetAsset.name
    )

    if (!nodeType || !widgetName) {
      toast.add({
        severity: 'warn',
        summary: t('g.warning'),
        detail: t('mediaAsset.unsupportedFileType'),
        life: 2000
      })
      return
    }

    const nodeDef = nodeDefStore.nodeDefsByName[nodeType]
    if (!nodeDef) {
      toast.add({
        severity: 'error',
        summary: t('g.error'),
        detail: t('mediaAsset.nodeTypeNotFound', { nodeType }),
        life: 3000
      })
      return
    }

    const node = litegraphService.addNodeOnGraph(nodeDef, {
      pos: litegraphService.getCanvasCenter()
    })

    if (!node) {
      toast.add({
        severity: 'error',
        summary: t('g.error'),
        detail: t('mediaAsset.failedToCreateNode'),
        life: 3000
      })
      return
    }

    // Get metadata to construct the annotated path
    const metadata = getOutputAssetMetadata(targetAsset.user_metadata)
    const assetType = getAssetType(targetAsset, 'input')

    // Create annotated path for the asset
    const annotated = createAnnotatedPath(
      {
        filename: targetAsset.name,
        subfolder: metadata?.subfolder || '',
        type: isResultItemType(assetType) ? assetType : undefined
      },
      {
        rootFolder: isResultItemType(assetType) ? assetType : undefined
      }
    )

    const widget = node.widgets?.find((w) => w.name === widgetName)
    if (widget) {
      widget.value = annotated
      widget.callback?.(annotated)
    }
    node.graph?.setDirtyCanvas(true, true)

    toast.add({
      severity: 'success',
      summary: t('g.success'),
      detail: t('mediaAsset.nodeAddedToWorkflow', { nodeType }),
      life: 2000
    })
  }

  /**
   * Open the workflow from this asset in a new tab
   * Uses shared workflow extraction and action service
   */
  const openWorkflow = async (asset?: AssetItem) => {
    const targetAsset = asset ?? mediaContext?.asset.value
    if (!targetAsset) return

    // Extract workflow using shared utility
    const { workflow, filename } = await extractWorkflowFromAsset(targetAsset)

    // Use shared action service
    const result = await workflowActions.openWorkflowAction(workflow, filename)

    if (!result.success) {
      toast.add({
        severity: 'warn',
        summary: t('g.warning'),
        detail: result.error || t('mediaAsset.noWorkflowDataFound'),
        life: 2000
      })
    } else {
      toast.add({
        severity: 'success',
        summary: t('g.success'),
        detail: t('mediaAsset.workflowOpenedInNewTab'),
        life: 2000
      })
    }
  }

  /**
   * Export the workflow from this asset as a JSON file
   * Uses shared workflow extraction and action service
   */
  const exportWorkflow = async (asset?: AssetItem) => {
    const targetAsset = asset ?? mediaContext?.asset.value
    if (!targetAsset) return

    // Extract workflow using shared utility
    const { workflow, filename } = await extractWorkflowFromAsset(targetAsset)

    // Use shared action service
    const result = await workflowActions.exportWorkflowAction(
      workflow,
      filename
    )

    if (!result.success) {
      const isNoWorkflow = result.error?.includes('No workflow')
      toast.add({
        severity: isNoWorkflow ? 'warn' : 'error',
        summary: isNoWorkflow ? t('g.warning') : t('g.error'),
        detail: result.error || t('mediaAsset.failedToExportWorkflow'),
        life: 3000
      })
    } else {
      toast.add({
        severity: 'success',
        summary: t('g.success'),
        detail: t('mediaAsset.workflowExportedSuccessfully'),
        life: 2000
      })
    }
  }

  /**
   * Delete one or more assets with confirmation dialog
   * @param assets Array of assets to delete
   * @param onDeleting Optional callback called with true when deletion starts (after confirmation) and false when complete
   * @returns true if all assets were deleted successfully, false otherwise
   */
  const deleteMultipleAssets = async (
    assets: AssetItem[],
    onDeleting?: (deleting: boolean) => void
  ): Promise<boolean> => {
    if (!assets || assets.length === 0) return false

    const assetsStore = useAssetsStore()
    const isSingleAsset = assets.length === 1

    return new Promise<boolean>((resolve) => {
      dialogStore.showDialog({
        key: 'delete-assets-confirmation',
        title: isSingleAsset
          ? t('mediaAsset.deleteAssetTitle')
          : t('mediaAsset.deleteSelectedTitle'),
        component: ConfirmationDialogContent,
        props: {
          message: isSingleAsset
            ? t('mediaAsset.deleteAssetDescription')
            : t('mediaAsset.deleteSelectedDescription', {
                count: assets.length
              }),
          type: 'delete',
          itemList: assets.map((asset) => asset.name),
          onConfirm: async () => {
            onDeleting?.(true)
            try {
              // Delete all assets using Promise.allSettled to track individual results
              const results = await Promise.allSettled(
                assets.map((asset) =>
                  deleteAssetApi(asset, getAssetType(asset))
                )
              )

              await new Promise((resolve) => setTimeout(resolve, 2000))

              // Count successes and failures
              const succeeded = results.filter(
                (r) => r.status === 'fulfilled'
              ).length
              const failed = results.filter((r) => r.status === 'rejected')

              // Log failed deletions for debugging
              failed.forEach((result, index) => {
                console.warn(
                  `Failed to delete asset ${assets[index].name}:`,
                  result.reason
                )
              })

              // Update stores after deletions
              const hasOutputAssets = assets.some(
                (a) => getAssetType(a) === 'output'
              )
              const hasInputAssets = assets.some(
                (a) => getAssetType(a) === 'input'
              )

              if (hasOutputAssets) {
                await assetsStore.updateHistory()
              }
              if (hasInputAssets) {
                await assetsStore.updateInputs()
              }

              // Show appropriate feedback based on results
              if (failed.length === 0) {
                // All succeeded
                toast.add({
                  severity: 'success',
                  summary: t('g.success'),
                  detail: isSingleAsset
                    ? t('mediaAsset.assetDeletedSuccessfully')
                    : t('mediaAsset.selection.assetsDeletedSuccessfully', {
                        count: succeeded
                      }),
                  life: 2000
                })
              } else if (succeeded === 0) {
                // All failed
                const errorMessage =
                  failed[0].status === 'rejected'
                    ? (failed[0].reason as Error)?.message
                    : ''
                const isCloudWarning = errorMessage?.includes('Cloud')

                toast.add({
                  severity: isCloudWarning ? 'warn' : 'error',
                  summary: isCloudWarning ? t('g.warning') : t('g.error'),
                  detail:
                    errorMessage ||
                    (isSingleAsset
                      ? t('mediaAsset.failedToDeleteAsset')
                      : t('mediaAsset.selection.failedToDeleteAssets')),
                  life: 3000
                })
              } else {
                // Partial success
                toast.add({
                  severity: 'warn',
                  summary: t('g.warning'),
                  detail: t('mediaAsset.selection.partialDeleteSuccess', {
                    succeeded,
                    failed: failed.length
                  }),
                  life: 3000
                })
              }

              resolve(failed.length === 0)
            } catch (error) {
              console.error('Failed to delete assets:', error)
              toast.add({
                severity: 'error',
                summary: t('g.error'),
                detail: isSingleAsset
                  ? t('mediaAsset.failedToDeleteAsset')
                  : t('mediaAsset.selection.failedToDeleteAssets'),
                life: 3000
              })

              resolve(false)
            } finally {
              onDeleting?.(false)
            }
          },
          onCancel: () => {
            resolve(false)
          }
        }
      })
    })
  }

  return {
    downloadAsset,
    downloadMultipleAssets,
    confirmDelete,
    deleteAsset,
    deleteMultipleAssets,
    copyJobId,
    addWorkflow,
    openWorkflow,
    exportWorkflow
  }
}