import { ref } from 'vue'
import { defineStore } from 'pinia'
import { v4 as uuidv4 } from 'uuid'
import { store } from '../index'
import type { IRawStepTask, IApiStepTask } from './agents'
import type { Node, Edge } from '@vue-flow/core'

// 分支节点数据接口 - 用于存储流程图中的节点和边
export interface IBranchData {
  id: string // 分支唯一ID
  parentNodeId: string // 父节点ID（根节点或任务节点）
  branchContent: string // 分支需求内容
  branchType: 'root' | 'task' // 分支类型
  nodes: Node[] // 分支包含的所有节点
  edges: Edge[] // 分支包含的所有边
  tasks: IRawStepTask[] // 分支的任务数据
  createdAt: number // 创建时间
}

export const useSelectionStore = defineStore('selection', () => {
  // ==================== 任务大纲探索分支数据存储 ====================
  const flowBranches = ref<IBranchData[]>([])

  // 任务大纲分支管理

  // 添加流程图分支
  function addFlowBranch(data: {
    parentNodeId: string
    branchContent: string
    branchType: 'root' | 'task'
    nodes: Node[]
    edges: Edge[]
    tasks: IRawStepTask[]
  }): string {
    const branchId = `flow-branch-${uuidv4()}`
    const newBranch: IBranchData = {
      id: branchId,
      parentNodeId: data.parentNodeId,
      branchContent: data.branchContent,
      branchType: data.branchType,
      nodes: data.nodes,
      edges: data.edges,
      tasks: data.tasks,
      createdAt: Date.now(),
    }
    flowBranches.value.push(newBranch)
    console.log('📂 保存流程图分支到 store:', newBranch)
    return branchId
  }

  // 获取所有流程图分支
  function getAllFlowBranches(): IBranchData[] {
    return flowBranches.value
  }

  // 根据父节点ID获取流程图分支
  function getFlowBranchesByParent(parentNodeId: string): IBranchData[] {
    return flowBranches.value.filter((branch) => branch.parentNodeId === parentNodeId)
  }

  // 删除流程图分支
  function removeFlowBranch(branchId: string): boolean {
    const index = flowBranches.value.findIndex((branch) => branch.id === branchId)
    if (index > -1) {
      flowBranches.value.splice(index, 1)
      console.log('🗑️ 删除流程图分支:', branchId)
      return true
    }
    return false
  }

  // 清除所有流程图分支
  function clearFlowBranches() {
    flowBranches.value = []
    console.log('🗑️ 清除所有流程图分支')
  }

  // 根据父节点ID清除流程图分支
  function clearFlowBranchesByParent(parentNodeId: string) {
    flowBranches.value = flowBranches.value.filter((branch) => branch.parentNodeId !== parentNodeId)
    console.log('🗑️ 清除父节点为', parentNodeId, '的流程图分支')
  }

  // ==================== 任务过程探索分支数据存储 ====================
  // 用于存储任务过程探索中的分支数据
  // 结构: Map<taskStepId, Map<agentGroupKey, IBranchData[]>>
  // - taskStepId: 任务步骤ID
  // - agentGroupKey: agent 组合的唯一标识（排序后的 JSON 字符串）
  // - IBranchData[]: 该 agent 组合在该任务下的所有分支数据
  const taskProcessBranchesMap = ref<Map<string, Map<string, IBranchData[]>>>(new Map())

  // 添加任务过程分支
  function addTaskProcessBranch(
    taskStepId: string,
    agents: string[], // 🆕 新增：需要传入 agents 列表
    data: {
      parentNodeId: string
      branchContent: string
      branchType: 'root' | 'task'
      nodes: Node[]
      edges: Edge[]
      tasks: IRawStepTask[]
    },
  ): string {
    const branchId = `task-process-branch-${uuidv4()}`
    const agentGroupKey = getAgentGroupKey(agents) // 🆕 生成 agent 组合 key

    const newBranch: IBranchData = {
      id: branchId,
      parentNodeId: data.parentNodeId,
      branchContent: data.branchContent,
      branchType: data.branchType,
      nodes: data.nodes,
      edges: data.edges,
      tasks: data.tasks,
      createdAt: Date.now(),
    }

    // 获取或创建该任务步骤的 Map
    if (!taskProcessBranchesMap.value.has(taskStepId)) {
      taskProcessBranchesMap.value.set(taskStepId, new Map())
    }

    // 获取或创建该 agent 组合的分支列表
    const agentMap = taskProcessBranchesMap.value.get(taskStepId)!
    if (!agentMap.has(agentGroupKey)) {
      agentMap.set(agentGroupKey, [])
    }
    agentMap.get(agentGroupKey)!.push(newBranch)

    console.log('📂 保存任务过程分支到 store:', { taskStepId, agents, agentGroupKey, branch: newBranch })
    return branchId
  }

  // 获取指定任务步骤和 agent 组合的所有分支
  function getTaskProcessBranches(taskStepId: string, agents: string[]): IBranchData[] {
    const agentGroupKey = getAgentGroupKey(agents)
    return taskProcessBranchesMap.value.get(taskStepId)?.get(agentGroupKey) || []
  }

  // 获取所有任务过程分支
  function getAllTaskProcessBranches(): Map<string, Map<string, IBranchData[]>> {
    return taskProcessBranchesMap.value
  }

  // 根据父节点ID获取任务过程分支
  function getTaskProcessBranchesByParent(taskStepId: string, agents: string[], parentNodeId: string): IBranchData[] {
    const agentGroupKey = getAgentGroupKey(agents)
    const branches = taskProcessBranchesMap.value.get(taskStepId)?.get(agentGroupKey) || []
    return branches.filter((branch) => branch.parentNodeId === parentNodeId)
  }

  // 删除任务过程分支
  function removeTaskProcessBranch(taskStepId: string, agents: string[], branchId: string): boolean {
    const agentGroupKey = getAgentGroupKey(agents)
    const branches = taskProcessBranchesMap.value.get(taskStepId)?.get(agentGroupKey)
    if (branches) {
      const index = branches.findIndex((branch) => branch.id === branchId)
      if (index > -1) {
        branches.splice(index, 1)
        console.log('🗑️ 删除任务过程分支:', { taskStepId, agents, branchId })
        return true
      }
    }
    return false
  }

  // 清除指定任务步骤和 agent 组合的所有分支
  function clearTaskProcessBranches(taskStepId: string, agents?: string[]) {
    if (agents) {
      // 清除指定 agent 组合的分支
      const agentGroupKey = getAgentGroupKey(agents)
      const agentMap = taskProcessBranchesMap.value.get(taskStepId)
      if (agentMap) {
        agentMap.delete(agentGroupKey)
        console.log('🗑️ 清除任务步骤的 agent 组合分支:', { taskStepId, agents })
      }
    } else {
      // 清除该任务步骤的所有分支（所有 agent 组合）
      taskProcessBranchesMap.value.delete(taskStepId)
      console.log('🗑️ 清除任务步骤的所有分支:', taskStepId)
    }
  }

  // ==================== Agent 组合 TaskProcess 数据存储 ====================
  // 用于存储 fill_stepTask_TaskProcess 接口返回的数据
  // 结构: Map<taskId, Map<agentGroupKey, IApiStepTask>>
  // - taskId: 任务ID
  // - agentGroupKey: agent 组合的唯一标识（排序后的 JSON 字符串）
  // - IApiStepTask: 该 agent 组合的完整 TaskProcess 数据
  const agentTaskProcessMap = ref<Map<string, Map<string, IApiStepTask>>>(new Map())

  // 生成 agent 组合的唯一 key（排序后保证一致性）
  function getAgentGroupKey(agents: string[]): string {
    // 🆕 处理 undefined 或 null 的情况
    if (!agents || !Array.isArray(agents)) {
      return JSON.stringify([])
    }
    return JSON.stringify([...agents].sort())
  }

  // 存储 agent 组合的 TaskProcess 数据
  function setAgentTaskProcess(taskId: string, agents: string[], taskProcess: IApiStepTask) {
    const groupKey = getAgentGroupKey(agents)

    // 获取或创建该任务的 Map
    if (!agentTaskProcessMap.value.has(taskId)) {
      agentTaskProcessMap.value.set(taskId, new Map())
    }

    // 存储该 agent 组合的 TaskProcess 数据
    agentTaskProcessMap.value.get(taskId)!.set(groupKey, taskProcess)
    console.log(`📦 存储 agent 组合 TaskProcess [任务: ${taskId}, agents: ${agents.join(', ')}]`)
  }

  // 获取 agent 组合的 TaskProcess 数据
  function getAgentTaskProcess(taskId: string, agents: string[]): IApiStepTask | undefined {
    const groupKey = getAgentGroupKey(agents)
    return agentTaskProcessMap.value.get(taskId)?.get(groupKey)
  }

  // 检查 agent 组合是否已有 TaskProcess 数据
  function hasAgentTaskProcess(taskId: string, agents: string[]): boolean {
    const groupKey = getAgentGroupKey(agents)
    return agentTaskProcessMap.value.get(taskId)?.has(groupKey) || false
  }

  // 清除指定任务的所有 agent 组合 TaskProcess 数据
  function clearAgentTaskProcess(taskId: string) {
    agentTaskProcessMap.value.delete(taskId)
    console.log(`🗑️ 清除任务的 agent 组合 TaskProcess 数据: ${taskId}`)
  }

  // 清除所有任务的 agent 组合 TaskProcess 数据
  function clearAllAgentTaskProcess() {
    agentTaskProcessMap.value.clear()
    console.log('🗑️ 清除所有任务的 agent 组合 TaskProcess 数据')
  }

  // ==================== 当前生效的任务过程分支 ====================
  // 记录每个任务步骤和 agent 组合当前生效的分支 ID（持久化选中状态）
  // 结构: Map<taskStepId, Map<agentGroupKey, branchId>>
  // - taskStepId: 任务步骤ID
  // - agentGroupKey: agent 组合的唯一标识
  // - branchId: 当前选中的分支ID
  const activeTaskProcessBranchMap = ref<Map<string, Map<string, string>>>(new Map())

  // 🆕 当前生效的 TaskProcess 数据（用于外部组件显示职责分配）
  // 结构: Map<taskStepId, Map<agentGroupKey, TaskProcess[]>>
  const activeTaskProcessDataMap = ref<Map<string, Map<string, any[]>>>(new Map())

  // 设置当前生效的分支
  function setActiveTaskProcessBranch(taskStepId: string, agents: string[], branchId: string) {
    const agentGroupKey = getAgentGroupKey(agents)

    // 获取或创建该任务步骤的 Map
    if (!activeTaskProcessBranchMap.value.has(taskStepId)) {
      activeTaskProcessBranchMap.value.set(taskStepId, new Map())
    }

    activeTaskProcessBranchMap.value.get(taskStepId)!.set(agentGroupKey, branchId)
    console.log('✅ 设置当前生效分支:', { taskStepId, agents, agentGroupKey, branchId })
  }

  // 🆕 设置当前生效的 TaskProcess 数据
  function setActiveTaskProcessData(taskStepId: string, agents: string[], taskProcess: any[]) {
    const agentGroupKey = getAgentGroupKey(agents)

    // 获取或创建该任务步骤的 Map
    if (!activeTaskProcessDataMap.value.has(taskStepId)) {
      activeTaskProcessDataMap.value.set(taskStepId, new Map())
    }

    activeTaskProcessDataMap.value.get(taskStepId)!.set(agentGroupKey, taskProcess)
    console.log('✅ 设置当前生效的 TaskProcess 数据:', { taskStepId, agents, agentGroupKey, taskProcess })
  }

  // 获取当前生效的分支 ID
  function getActiveTaskProcessBranch(taskStepId: string, agents: string[]): string | undefined {
    const agentGroupKey = getAgentGroupKey(agents)
    return activeTaskProcessBranchMap.value.get(taskStepId)?.get(agentGroupKey)
  }

  // 🆕 获取当前生效的 TaskProcess 数据
  function getActiveTaskProcessData(taskStepId: string, agents: string[]): any[] | undefined {
    const agentGroupKey = getAgentGroupKey(agents)
    return activeTaskProcessDataMap.value.get(taskStepId)?.get(agentGroupKey)
  }

  // 清除生效分支
  function clearActiveTaskProcessBranch(taskStepId: string, agents?: string[]) {
    if (agents) {
      // 清除指定 agent 组合的生效分支
      const agentGroupKey = getAgentGroupKey(agents)
      activeTaskProcessBranchMap.value.get(taskStepId)?.delete(agentGroupKey)
      activeTaskProcessDataMap.value.get(taskStepId)?.delete(agentGroupKey)
      console.log('🗑️ 清除任务步骤的 agent 组合生效分支:', { taskStepId, agents })
    } else {
      // 清除该任务步骤的所有生效分支（所有 agent 组合）
      activeTaskProcessBranchMap.value.delete(taskStepId)
      activeTaskProcessDataMap.value.delete(taskStepId)
      console.log('🗑️ 清除任务步骤的所有生效分支:', taskStepId)
    }
  }

  return {
    // 状态
    flowBranches,
    taskProcessBranchesMap,
    agentTaskProcessMap,
    activeTaskProcessBranchMap,
    activeTaskProcessDataMap, // 🆕 新增

    // 任务大纲分支管理方法
    addFlowBranch,
    getAllFlowBranches,
    getFlowBranchesByParent,
    removeFlowBranch,
    clearFlowBranches,
    clearFlowBranchesByParent,

    // 任务过程分支管理方法
    addTaskProcessBranch,
    getTaskProcessBranches,
    getAllTaskProcessBranches,
    getTaskProcessBranchesByParent,
    removeTaskProcessBranch,
    clearTaskProcessBranches,

    // 🆕 任务过程分支生效状态管理方法
    setActiveTaskProcessBranch,
    setActiveTaskProcessData, // 🆕 新增
    getActiveTaskProcessBranch,
    getActiveTaskProcessData, // 🆕 新增
    clearActiveTaskProcessBranch,

    // Agent 组合 TaskProcess 数据管理方法
    getAgentGroupKey,
    setAgentTaskProcess,
    getAgentTaskProcess,
    hasAgentTaskProcess,
    clearAgentTaskProcess,
    clearAllAgentTaskProcess,
  }
})

/**
 * 用于在组件外部使用 Selection Store
 */
export function useSelectionStoreHook() {
  return useSelectionStore(store)
}