import {
  useCallback,
  useMemo,
} from 'react'
import type {
  Node,
  ToolWithProvider,
} from '../types'
import {
  BlockEnum,
} from '../types'
import {
  useStore,
  useWorkflowStore,
} from '../store'
import { CollectionType } from '@/app/components/tools/types'
import { canFindTool } from '@/utils'
import { useAllTriggerPlugins } from '@/service/use-triggers'
import type { PluginTriggerNodeType } from '../nodes/trigger-plugin/types'
import type { ToolNodeType } from '../nodes/tool/types'
import type { DataSourceNodeType } from '../nodes/data-source/types'
import type { TriggerWithProvider } from '../block-selector/types'

const isTriggerPluginNode = (data: Node['data']): data is PluginTriggerNodeType => {
  return data.type === BlockEnum.TriggerPlugin
}

const isToolNode = (data: Node['data']): data is ToolNodeType => {
  return data.type === BlockEnum.Tool
}

const isDataSourceNode = (data: Node['data']): data is DataSourceNodeType => {
  return data.type === BlockEnum.DataSource
}

const findTriggerPluginIcon = (
  identifiers: (string | undefined)[],
  triggers: TriggerWithProvider[] | undefined,
) => {
  const targetTriggers = triggers || []
  for (const identifier of identifiers) {
    if (!identifier)
      continue
    const matched = targetTriggers.find(trigger => trigger.id === identifier || canFindTool(trigger.id, identifier))
    if (matched?.icon)
      return matched.icon
  }
  return undefined
}

export const useToolIcon = (data?: Node['data']) => {
  const buildInTools = useStore(s => s.buildInTools)
  const customTools = useStore(s => s.customTools)
  const workflowTools = useStore(s => s.workflowTools)
  const mcpTools = useStore(s => s.mcpTools)
  const dataSourceList = useStore(s => s.dataSourceList)
  const { data: triggerPlugins } = useAllTriggerPlugins()
  const toolIcon = useMemo(() => {
    if (!data)
      return ''
    if (isTriggerPluginNode(data)) {
      const icon = findTriggerPluginIcon(
        [
          data.plugin_id,
          data.provider_id,
          data.provider_name,
        ],
        triggerPlugins,
      )
      return icon || ''
    }
    if (isToolNode(data)) {
      let primaryCollection: ToolWithProvider[] | undefined
      switch (data.provider_type) {
        case CollectionType.custom:
          primaryCollection = customTools
          break
        case CollectionType.mcp:
          primaryCollection = mcpTools
          break
        case CollectionType.workflow:
          primaryCollection = workflowTools
          break
        case CollectionType.builtIn:
        default:
          primaryCollection = buildInTools
          break
      }

      const collectionsToSearch = [
        primaryCollection,
        buildInTools,
        customTools,
        workflowTools,
        mcpTools,
      ] as Array<ToolWithProvider[] | undefined>

      const seen = new Set<ToolWithProvider[]>()
      for (const collection of collectionsToSearch) {
        if (!collection || seen.has(collection))
          continue
        seen.add(collection)
        const matched = collection.find((toolWithProvider) => {
          if (canFindTool(toolWithProvider.id, data.provider_id))
            return true
          if (data.plugin_id && toolWithProvider.plugin_id === data.plugin_id)
            return true
          return data.provider_name === toolWithProvider.name
        })
        if (matched?.icon)
          return matched.icon
      }

      if (data.provider_icon)
        return data.provider_icon

      return ''
    }
    if (isDataSourceNode(data))
      return dataSourceList?.find(toolWithProvider => toolWithProvider.plugin_id === data.plugin_id)?.icon || ''
    return ''
  }, [data, dataSourceList, buildInTools, customTools, mcpTools, workflowTools, triggerPlugins])

  return toolIcon
}

export const useGetToolIcon = () => {
  const workflowStore = useWorkflowStore()
  const { data: triggerPlugins } = useAllTriggerPlugins()

  const getToolIcon = useCallback((data: Node['data']) => {
    const {
      buildInTools,
      customTools,
      workflowTools,
      mcpTools,
      dataSourceList,
    } = workflowStore.getState()

    if (isTriggerPluginNode(data)) {
      return findTriggerPluginIcon(
        [
          data.plugin_id,
          data.provider_id,
          data.provider_name,
        ],
        triggerPlugins,
      )
    }

    if (isToolNode(data)) {
      let primaryCollection: ToolWithProvider[] | undefined
      switch (data.provider_type) {
        case CollectionType.custom:
          primaryCollection = customTools
          break
        case CollectionType.mcp:
          primaryCollection = mcpTools
          break
        case CollectionType.workflow:
          primaryCollection = workflowTools
          break
        case CollectionType.builtIn:
        default:
          primaryCollection = buildInTools
          break
      }

      const collectionsToSearch = [
        primaryCollection,
        buildInTools,
        customTools,
        workflowTools,
        mcpTools,
      ] as Array<ToolWithProvider[] | undefined>

      const seen = new Set<ToolWithProvider[]>()
      for (const collection of collectionsToSearch) {
        if (!collection || seen.has(collection))
          continue
        seen.add(collection)
        const matched = collection.find((toolWithProvider) => {
          if (canFindTool(toolWithProvider.id, data.provider_id))
            return true
          if (data.plugin_id && toolWithProvider.plugin_id === data.plugin_id)
            return true
          return data.provider_name === toolWithProvider.name
        })
        if (matched?.icon)
          return matched.icon
      }

      if (data.provider_icon)
        return data.provider_icon

      return undefined
    }

    if (isDataSourceNode(data))
      return dataSourceList?.find(toolWithProvider => toolWithProvider.plugin_id === data.plugin_id)?.icon

    return undefined
  }, [workflowStore, triggerPlugins])

  return getToolIcon
}