c689af56c8
✨ feat(agent): 重构 Agent 分层并修复普通聊天助手消息未写入 Redis 的问题 🔧 按职责重构 backend/agent 目录为 route/chat/quicknote 三层结构 🔄 将随口记链路拆分为 graph/nodes/tool/state/prompt，其中 graph 仅负责连线 🏃 新增 quicknote runner（方法引用）来收口节点依赖，提升代码可读性 🔀 将控制码分流逻辑抽离到 agent/route，服务层改为薄封装调用 📚 更新相关 README 与测试引用路径，保持原业务逻辑不变 🐛 修复普通聊天链路遗漏 assistant 写入 Redis 的问题（确保 MySQL 和 Redis 的口径一致）
619 lines
20 KiB
Go
619 lines
20 KiB
Go
package quicknote
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import (
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"context"
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"errors"
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/cloudwego/eino/components/tool"
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toolutils "github.com/cloudwego/eino/components/tool/utils"
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"github.com/cloudwego/eino/schema"
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)
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const (
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// ToolNameQuickNoteCreateTask 是“AI随口记”写库工具的标准名称。
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// 该名称会直接暴露给大模型，因此建议保持稳定，避免后续提示词和历史上下文失配。
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ToolNameQuickNoteCreateTask = "quick_note_create_task"
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// ToolDescQuickNoteCreateTask 是工具的简要职责说明。
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ToolDescQuickNoteCreateTask = "把用户随口提到的事项落库为任务，支持可选截止时间与优先级"
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)
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var (
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// quickNoteDeadlineLayouts 是“绝对时间”白名单格式。
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// 只要命中任意一个 layout，就会被归一化为分钟级时间并进入写库流程。
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quickNoteDeadlineLayouts = []string{
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time.RFC3339,
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"2006-01-02T15:04",
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"2006-01-02 15:04:05",
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"2006-01-02 15:04",
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"2006/01/02 15:04:05",
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"2006/01/02 15:04",
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"2006.01.02 15:04:05",
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"2006.01.02 15:04",
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"2006-01-02",
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"2006/01/02",
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"2006.01.02",
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}
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quickNoteDateOnlyLayouts = map[string]struct{}{
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"2006-01-02": {},
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"2006/01/02": {},
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"2006.01.02": {},
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}
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// 正则区：
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// 1) 用于解析明确时间表达；
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// 2) 用于“是否存在时间线索”的判定（即使格式错误，也会触发校验失败而非静默忽略）。
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quickNoteClockHMRegex = regexp.MustCompile(`(\d{1,2})\s*[:：]\s*(\d{1,2})`)
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quickNoteClockCNRegex = regexp.MustCompile(`(\d{1,2})\s*点\s*(半|(\d{1,2})\s*分?)?`)
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quickNoteYMDRegex = regexp.MustCompile(`(\d{4})\s*年\s*(\d{1,2})\s*月\s*(\d{1,2})\s*[日号]?`)
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quickNoteMDRegex = regexp.MustCompile(`(\d{1,2})\s*月\s*(\d{1,2})\s*[日号]?`)
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quickNoteDateSepRegex = regexp.MustCompile(`\d{1,4}\s*[-/.]\s*\d{1,2}(\s*[-/.]\s*\d{1,2})?`)
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quickNoteWeekdayRegex = regexp.MustCompile(`(下周|下星期|下礼拜|本周|这周|本星期|这星期|周|星期|礼拜)([一二三四五六日天])`)
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quickNoteRelativeTokens = []string{
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"今天", "今日", "今晚", "今早", "今晨", "明天", "明日", "后天", "大后天", "昨天", "昨日",
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"早上", "早晨", "上午", "中午", "下午", "晚上", "傍晚", "夜里", "凌晨",
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}
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)
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// QuickNoteToolDeps 描述“随口记工具包”需要的外部依赖。
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// 这里采用函数注入的方式，避免 agent 包和 service/dao 强耦合，后续更容易演进为 mock 测试或多实现切换。
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type QuickNoteToolDeps struct {
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// ResolveUserID 从上下文中解析当前登录用户 ID。
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ResolveUserID func(ctx context.Context) (int, error)
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// CreateTask 执行真实写库动作。
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CreateTask func(ctx context.Context, req QuickNoteCreateTaskRequest) (*QuickNoteCreateTaskResult, error)
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}
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func (d QuickNoteToolDeps) validate() error {
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if d.ResolveUserID == nil {
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return errors.New("quick note tool deps: ResolveUserID is nil")
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}
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if d.CreateTask == nil {
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return errors.New("quick note tool deps: CreateTask is nil")
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}
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return nil
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}
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// QuickNoteToolBundle 是随口记工具集合的打包结果。
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// - Tools: 给 ToolsNode 使用
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// - ToolInfos: 给 ChatModel 绑定工具 schema 使用
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// 两者分开返回，可以适配你后面用 chain、graph、react 的不同挂载姿势。
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type QuickNoteToolBundle struct {
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Tools []tool.BaseTool
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ToolInfos []*schema.ToolInfo
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}
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// QuickNoteCreateTaskRequest 是工具层到业务层的内部请求结构。
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// 与模型输入解耦，避免模型字段变化直接影响业务签名。
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type QuickNoteCreateTaskRequest struct {
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UserID int
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Title string
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PriorityGroup int
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DeadlineAt *time.Time
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}
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// QuickNoteCreateTaskResult 是业务层返回给工具层的结构化结果。
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type QuickNoteCreateTaskResult struct {
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TaskID int
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Title string
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PriorityGroup int
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DeadlineAt *time.Time
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}
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// QuickNoteCreateTaskToolInput 是提供给大模型的工具参数定义。
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// 注意：user_id 不对模型暴露，统一从鉴权上下文提取，避免越权写入。
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type QuickNoteCreateTaskToolInput struct {
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Title string `json:"title" jsonschema:"required,description=任务标题，简洁明确"`
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// PriorityGroup 使用 1~4，和后端 tasks.priority 保持一致。
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PriorityGroup int `json:"priority_group" jsonschema:"required,enum=1,enum=2,enum=3,enum=4,description=优先级分组(1重要且紧急,2重要不紧急,3简单不重要,4不简单不重要)"`
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// DeadlineAt 支持绝对时间与常见相对时间（如明天/后天/下周一/今晚），内部会归一化为绝对时间。
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DeadlineAt string `json:"deadline_at,omitempty" jsonschema:"description=可选截止时间，支持RFC3339、yyyy-MM-dd HH:mm:ss、yyyy-MM-dd HH:mm 以及常见中文相对时间"`
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}
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// QuickNoteCreateTaskToolOutput 是返回给大模型的工具结果。
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// 该结构可直接给模型用于“向用户解释已记录到哪个优先级”。
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type QuickNoteCreateTaskToolOutput struct {
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TaskID int `json:"task_id"`
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Title string `json:"title"`
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PriorityGroup int `json:"priority_group"`
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PriorityLabel string `json:"priority_label"`
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DeadlineAt string `json:"deadline_at,omitempty"`
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Message string `json:"message"`
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}
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// BuildQuickNoteToolBundle 构建“AI随口记”工具包。
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// 这是 agent 目录给上层编排层（chain/graph/react）提供的统一入口。
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func BuildQuickNoteToolBundle(ctx context.Context, deps QuickNoteToolDeps) (*QuickNoteToolBundle, error) {
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if err := deps.validate(); err != nil {
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return nil, err
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}
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createTaskTool, err := toolutils.InferTool(
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ToolNameQuickNoteCreateTask,
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ToolDescQuickNoteCreateTask,
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func(ctx context.Context, input *QuickNoteCreateTaskToolInput) (*QuickNoteCreateTaskToolOutput, error) {
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if input == nil {
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return nil, errors.New("工具参数不能为空")
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}
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title := strings.TrimSpace(input.Title)
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if title == "" {
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return nil, errors.New("title 不能为空")
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}
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if !IsValidTaskPriority(input.PriorityGroup) {
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return nil, fmt.Errorf("priority_group=%d 非法，必须在 1~4", input.PriorityGroup)
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}
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// 这里对 deadline_at 做“强校验”：
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// - 空值允许（代表没有截止时间）；
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// - 非空但无法解析直接报错，避免把有问题的时间静默写成 NULL。
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deadline, err := parseOptionalDeadline(input.DeadlineAt)
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if err != nil {
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return nil, err
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}
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userID, err := deps.ResolveUserID(ctx)
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if err != nil {
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return nil, fmt.Errorf("解析用户身份失败: %w", err)
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}
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if userID <= 0 {
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return nil, fmt.Errorf("非法 user_id=%d", userID)
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}
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result, err := deps.CreateTask(ctx, QuickNoteCreateTaskRequest{
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UserID: userID,
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Title: title,
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PriorityGroup: input.PriorityGroup,
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DeadlineAt: deadline,
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})
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if err != nil {
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return nil, err
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}
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if result == nil || result.TaskID <= 0 {
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return nil, errors.New("写入任务后返回结果异常")
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}
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finalTitle := title
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if strings.TrimSpace(result.Title) != "" {
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finalTitle = strings.TrimSpace(result.Title)
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}
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finalPriority := input.PriorityGroup
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if IsValidTaskPriority(result.PriorityGroup) {
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finalPriority = result.PriorityGroup
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}
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deadlineStr := ""
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if result.DeadlineAt != nil {
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deadlineStr = result.DeadlineAt.In(quickNoteLocation()).Format(time.RFC3339)
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} else if deadline != nil {
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deadlineStr = deadline.In(quickNoteLocation()).Format(time.RFC3339)
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}
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return &QuickNoteCreateTaskToolOutput{
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TaskID: result.TaskID,
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Title: finalTitle,
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PriorityGroup: finalPriority,
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PriorityLabel: PriorityLabelCN(finalPriority),
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DeadlineAt: deadlineStr,
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Message: fmt.Sprintf("已记录：%s（%s）", finalTitle, PriorityLabelCN(finalPriority)),
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}, nil
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},
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)
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if err != nil {
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return nil, fmt.Errorf("构建随口记工具失败: %w", err)
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}
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tools := []tool.BaseTool{createTaskTool}
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infos, err := collectToolInfos(ctx, tools)
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if err != nil {
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return nil, err
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}
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return &QuickNoteToolBundle{
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Tools: tools,
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ToolInfos: infos,
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}, nil
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}
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func collectToolInfos(ctx context.Context, tools []tool.BaseTool) ([]*schema.ToolInfo, error) {
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infos := make([]*schema.ToolInfo, 0, len(tools))
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for _, t := range tools {
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info, err := t.Info(ctx)
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if err != nil {
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return nil, fmt.Errorf("读取工具信息失败: %w", err)
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}
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infos = append(infos, info)
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}
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return infos, nil
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}
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// parseOptionalDeadline 解析工具输入中的可选截止时间。
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// 该入口用于“工具参数强校验”：只要调用方给了非空 deadline_at，就必须能被解析。
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func parseOptionalDeadline(raw string) (*time.Time, error) {
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value := normalizeDeadlineInput(raw)
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if value == "" {
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return nil, nil
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}
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deadline, hasHint, err := parseOptionalDeadlineFromText(value, quickNoteNowToMinute())
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if err != nil {
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return nil, err
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}
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if deadline == nil {
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if !hasHint {
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return nil, fmt.Errorf("deadline_at 格式不支持: %s", value)
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}
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return nil, fmt.Errorf("deadline_at 无法解析: %s", value)
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}
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return deadline, nil
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}
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// parseOptionalDeadlineWithNow 在给定时间基准下解析 deadline。
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// 该函数保持“严格模式”：非空字符串无法解析时会直接返回 error。
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func parseOptionalDeadlineWithNow(raw string, now time.Time) (*time.Time, error) {
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value := normalizeDeadlineInput(raw)
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if value == "" {
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return nil, nil
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}
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deadline, _, err := parseOptionalDeadlineFromText(value, now)
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if err != nil {
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return nil, err
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}
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if deadline == nil {
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return nil, fmt.Errorf("deadline_at 格式不支持: %s", value)
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}
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return deadline, nil
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}
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// parseOptionalDeadlineFromUserInput 是“用户原句解析”的宽松入口。
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// 返回值说明：
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// - deadline != nil：成功解析出时间；
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// - hasHint=false 且 err=nil：文本里没有明显时间线索，应视为“用户没给时间”；
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// - hasHint=true 且 err!=nil：用户给了时间但格式非法，应提示用户修正，不应落库。
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func parseOptionalDeadlineFromUserInput(raw string, now time.Time) (*time.Time, bool, error) {
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value := normalizeDeadlineInput(raw)
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if value == "" {
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return nil, false, nil
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}
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deadline, hasHint, err := parseOptionalDeadlineFromText(value, now)
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if err != nil {
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if hasHint {
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return nil, true, err
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}
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return nil, false, nil
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}
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if deadline == nil {
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if hasHint {
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return nil, true, fmt.Errorf("deadline_at 无法解析: %s", value)
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}
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return nil, false, nil
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}
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return deadline, true, nil
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}
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// parseOptionalDeadlineFromText 是内部通用解析器。
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// 解析顺序：
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// 1) 绝对时间（明确年月日时分）；
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// 2) 相对时间（明天/下周一/今晚）；
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// 3) 若识别到时间线索但仍失败，返回 hasHint=true + error，交给上层决定是否拦截。
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func parseOptionalDeadlineFromText(value string, now time.Time) (*time.Time, bool, error) {
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if strings.TrimSpace(value) == "" {
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return nil, false, nil
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}
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||
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loc := quickNoteLocation()
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now = now.In(loc)
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||
hasHint := hasDeadlineHint(value)
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||
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if abs, ok := tryParseAbsoluteDeadline(value, loc); ok {
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return abs, true, nil
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||
}
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|
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if rel, recognized, err := tryParseRelativeDeadline(value, now, loc); recognized {
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if err != nil {
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||
return nil, true, err
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}
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return rel, true, nil
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||
}
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||
|
||
if hasHint {
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return nil, true, fmt.Errorf("deadline_at 格式不支持: %s", value)
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}
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return nil, false, nil
|
||
}
|
||
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// normalizeDeadlineInput 把中文标点和空白先归一化，降低格式解析的噪声。
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func normalizeDeadlineInput(raw string) string {
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trimmed := strings.TrimSpace(raw)
|
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if trimmed == "" {
|
||
return ""
|
||
}
|
||
replacer := strings.NewReplacer(
|
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"：", ":",
|
||
"，", ",",
|
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"。", ".",
|
||
" ", " ",
|
||
)
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||
return strings.TrimSpace(replacer.Replace(trimmed))
|
||
}
|
||
|
||
// hasDeadlineHint 判断文本里是否存在“时间相关线索”。
|
||
// 该函数的意义是区分两种情况：
|
||
// 1) 用户根本没给时间（允许 deadline 为空）；
|
||
// 2) 用户给了时间但写错（必须提示修正，不能静默写 NULL）。
|
||
func hasDeadlineHint(value string) bool {
|
||
if quickNoteClockHMRegex.MatchString(value) ||
|
||
quickNoteClockCNRegex.MatchString(value) ||
|
||
quickNoteYMDRegex.MatchString(value) ||
|
||
quickNoteMDRegex.MatchString(value) ||
|
||
quickNoteDateSepRegex.MatchString(value) ||
|
||
quickNoteWeekdayRegex.MatchString(value) {
|
||
return true
|
||
}
|
||
for _, token := range quickNoteRelativeTokens {
|
||
if strings.Contains(value, token) {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
// tryParseAbsoluteDeadline 尝试按绝对时间格式解析。
|
||
// 若只提供日期（无时分），默认归一到当天 23:59，表示“当日截止”。
|
||
func tryParseAbsoluteDeadline(value string, loc *time.Location) (*time.Time, bool) {
|
||
for _, layout := range quickNoteDeadlineLayouts {
|
||
var (
|
||
t time.Time
|
||
err error
|
||
)
|
||
if layout == time.RFC3339 {
|
||
t, err = time.Parse(layout, value)
|
||
if err == nil {
|
||
t = t.In(loc)
|
||
}
|
||
} else {
|
||
t, err = time.ParseInLocation(layout, value, loc)
|
||
}
|
||
if err != nil {
|
||
continue
|
||
}
|
||
|
||
if _, dateOnly := quickNoteDateOnlyLayouts[layout]; dateOnly {
|
||
t = time.Date(t.Year(), t.Month(), t.Day(), 23, 59, 0, 0, loc)
|
||
} else {
|
||
t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), 0, 0, loc)
|
||
}
|
||
return &t, true
|
||
}
|
||
return nil, false
|
||
}
|
||
|
||
// tryParseRelativeDeadline 尝试解析“相对时间 + 可选时刻”。
|
||
// 例子：
|
||
// - 明天交报告（默认 23:59）
|
||
// - 下周一上午9点开会（解析为下周一 09:00）
|
||
func tryParseRelativeDeadline(value string, now time.Time, loc *time.Location) (*time.Time, bool, error) {
|
||
baseDate, recognized := inferBaseDate(value, now, loc)
|
||
if !recognized {
|
||
return nil, false, nil
|
||
}
|
||
|
||
hour, minute, hasExplicitClock, err := extractClock(value)
|
||
if err != nil {
|
||
return nil, true, err
|
||
}
|
||
if !hasExplicitClock {
|
||
hour, minute = defaultClockByHint(value)
|
||
}
|
||
|
||
deadline := time.Date(baseDate.Year(), baseDate.Month(), baseDate.Day(), hour, minute, 0, 0, loc)
|
||
return &deadline, true, nil
|
||
}
|
||
|
||
// inferBaseDate 负责先确定“哪一天”。
|
||
// 解析优先级：
|
||
// 1) 明确年月日；
|
||
// 2) 月日（自动推断年份）；
|
||
// 3) 周几表达（本周/下周）；
|
||
// 4) 明天/后天/今晚等相对词。
|
||
func inferBaseDate(value string, now time.Time, loc *time.Location) (time.Time, bool) {
|
||
if matched := quickNoteYMDRegex.FindStringSubmatch(value); len(matched) == 4 {
|
||
year, _ := strconv.Atoi(matched[1])
|
||
month, _ := strconv.Atoi(matched[2])
|
||
day, _ := strconv.Atoi(matched[3])
|
||
if isValidDate(year, month, day) {
|
||
return time.Date(year, time.Month(month), day, 0, 0, 0, 0, loc), true
|
||
}
|
||
}
|
||
|
||
if matched := quickNoteMDRegex.FindStringSubmatch(value); len(matched) == 3 {
|
||
month, _ := strconv.Atoi(matched[1])
|
||
day, _ := strconv.Atoi(matched[2])
|
||
year := now.Year()
|
||
if !isValidDate(year, month, day) {
|
||
return time.Time{}, false
|
||
}
|
||
candidate := time.Date(year, time.Month(month), day, 0, 0, 0, 0, loc)
|
||
if candidate.Before(startOfDay(now)) {
|
||
year++
|
||
if !isValidDate(year, month, day) {
|
||
return time.Time{}, false
|
||
}
|
||
candidate = time.Date(year, time.Month(month), day, 0, 0, 0, 0, loc)
|
||
}
|
||
return candidate, true
|
||
}
|
||
|
||
if matched := quickNoteWeekdayRegex.FindStringSubmatch(value); len(matched) == 3 {
|
||
prefix := matched[1]
|
||
target, ok := toWeekday(matched[2])
|
||
if ok {
|
||
return resolveWeekdayDate(now, prefix, target), true
|
||
}
|
||
}
|
||
|
||
today := startOfDay(now)
|
||
switch {
|
||
case strings.Contains(value, "大后天"):
|
||
return today.AddDate(0, 0, 3), true
|
||
case strings.Contains(value, "后天"):
|
||
return today.AddDate(0, 0, 2), true
|
||
case strings.Contains(value, "明天") || strings.Contains(value, "明日"):
|
||
return today.AddDate(0, 0, 1), true
|
||
case strings.Contains(value, "今天") || strings.Contains(value, "今日") || strings.Contains(value, "今晚") || strings.Contains(value, "今早") || strings.Contains(value, "今晨"):
|
||
return today, true
|
||
case strings.Contains(value, "昨天") || strings.Contains(value, "昨日"):
|
||
return today.AddDate(0, 0, -1), true
|
||
default:
|
||
return time.Time{}, false
|
||
}
|
||
}
|
||
|
||
// extractClock 从文本提取时刻（时/分）。
|
||
// 支持：
|
||
// - 24h 表达：18:30
|
||
// - 中文表达：3点、3点半、3点20分
|
||
func extractClock(value string) (int, int, bool, error) {
|
||
hour := 0
|
||
minute := 0
|
||
hasClock := false
|
||
|
||
if matched := quickNoteClockHMRegex.FindStringSubmatch(value); len(matched) == 3 {
|
||
h, errH := strconv.Atoi(matched[1])
|
||
m, errM := strconv.Atoi(matched[2])
|
||
if errH != nil || errM != nil {
|
||
return 0, 0, true, fmt.Errorf("deadline_at 时间解析失败: %s", value)
|
||
}
|
||
hour = h
|
||
minute = m
|
||
hasClock = true
|
||
} else if matched := quickNoteClockCNRegex.FindStringSubmatch(value); len(matched) >= 2 {
|
||
h, errH := strconv.Atoi(matched[1])
|
||
if errH != nil {
|
||
return 0, 0, true, fmt.Errorf("deadline_at 时间解析失败: %s", value)
|
||
}
|
||
hour = h
|
||
minute = 0
|
||
hasClock = true
|
||
if len(matched) >= 3 {
|
||
if matched[2] == "半" {
|
||
minute = 30
|
||
} else if len(matched) >= 4 && strings.TrimSpace(matched[3]) != "" {
|
||
m, errM := strconv.Atoi(strings.TrimSpace(matched[3]))
|
||
if errM != nil {
|
||
return 0, 0, true, fmt.Errorf("deadline_at 时间解析失败: %s", value)
|
||
}
|
||
minute = m
|
||
}
|
||
}
|
||
}
|
||
|
||
if !hasClock {
|
||
return 0, 0, false, nil
|
||
}
|
||
|
||
if isPMHint(value) && hour < 12 {
|
||
hour += 12
|
||
}
|
||
if isNoonHint(value) && hour >= 1 && hour <= 10 {
|
||
hour += 12
|
||
}
|
||
if strings.Contains(value, "凌晨") && hour == 12 {
|
||
hour = 0
|
||
}
|
||
|
||
if hour < 0 || hour > 23 || minute < 0 || minute > 59 {
|
||
return 0, 0, true, fmt.Errorf("deadline_at 时间超出范围: %s", value)
|
||
}
|
||
return hour, minute, true, nil
|
||
}
|
||
|
||
// defaultClockByHint 当文本只给了“日期/相对日”但没给具体时刻时，按语义兜底。
|
||
func defaultClockByHint(value string) (int, int) {
|
||
switch {
|
||
case strings.Contains(value, "凌晨"):
|
||
return 1, 0
|
||
case strings.Contains(value, "早上") || strings.Contains(value, "早晨") || strings.Contains(value, "上午") || strings.Contains(value, "今早") || strings.Contains(value, "明早"):
|
||
return 9, 0
|
||
case strings.Contains(value, "中午"):
|
||
return 12, 0
|
||
case strings.Contains(value, "下午"):
|
||
return 15, 0
|
||
case strings.Contains(value, "晚上") || strings.Contains(value, "今晚") || strings.Contains(value, "傍晚") || strings.Contains(value, "夜里"):
|
||
return 20, 0
|
||
default:
|
||
// 只给了日期没有具体时刻时，默认当天结束前。
|
||
return 23, 59
|
||
}
|
||
}
|
||
|
||
func isPMHint(value string) bool {
|
||
return strings.Contains(value, "下午") || strings.Contains(value, "晚上") || strings.Contains(value, "今晚") || strings.Contains(value, "傍晚")
|
||
}
|
||
|
||
func isNoonHint(value string) bool {
|
||
return strings.Contains(value, "中午")
|
||
}
|
||
|
||
func startOfDay(t time.Time) time.Time {
|
||
loc := t.Location()
|
||
return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, loc)
|
||
}
|
||
|
||
func isValidDate(year, month, day int) bool {
|
||
if month < 1 || month > 12 || day < 1 || day > 31 {
|
||
return false
|
||
}
|
||
candidate := time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.UTC)
|
||
return candidate.Year() == year && int(candidate.Month()) == month && candidate.Day() == day
|
||
}
|
||
|
||
func toWeekday(chinese string) (time.Weekday, bool) {
|
||
switch chinese {
|
||
case "一":
|
||
return time.Monday, true
|
||
case "二":
|
||
return time.Tuesday, true
|
||
case "三":
|
||
return time.Wednesday, true
|
||
case "四":
|
||
return time.Thursday, true
|
||
case "五":
|
||
return time.Friday, true
|
||
case "六":
|
||
return time.Saturday, true
|
||
case "日", "天":
|
||
return time.Sunday, true
|
||
default:
|
||
return time.Sunday, false
|
||
}
|
||
}
|
||
|
||
// resolveWeekdayDate 根据“本周/下周 + 周几”换算目标日期。
|
||
func resolveWeekdayDate(now time.Time, prefix string, target time.Weekday) time.Time {
|
||
today := startOfDay(now)
|
||
weekdayOffset := (int(today.Weekday()) + 6) % 7
|
||
weekStart := today.AddDate(0, 0, -weekdayOffset)
|
||
targetOffset := (int(target) + 6) % 7
|
||
candidateThisWeek := weekStart.AddDate(0, 0, targetOffset)
|
||
|
||
switch {
|
||
case strings.HasPrefix(prefix, "下"):
|
||
return candidateThisWeek.AddDate(0, 0, 7)
|
||
case strings.HasPrefix(prefix, "本"), strings.HasPrefix(prefix, "这"):
|
||
return candidateThisWeek
|
||
default:
|
||
if candidateThisWeek.Before(today) {
|
||
return candidateThisWeek.AddDate(0, 0, 7)
|
||
}
|
||
return candidateThisWeek
|
||
}
|
||
}
|