# =============================================================================
# 企微IT智能服务台 — 知识库优化建议 Pydantic Schema
# =============================================================================
# 说明：定义知识库优化建议的请求/响应数据结构
# 包含：建议创建、审核、列表查询等
# =============================================================================

from datetime import datetime
from typing import Any, Dict, List, Optional

from pydantic import BaseModel, Field

from app.schemas.enums import (
    AudienceEnum,
    GraphSyncStatusEnum,
    RelationTypeEnum,
    SourceTypeEnum,
    SuggestionStatusEnum,
)


# -----------------------------------------------------------------------------
# 创建建议请求 Schema
# -----------------------------------------------------------------------------
class KnowledgeSuggestionCreate(BaseModel):
    """创建知识库优化建议请求 Schema。

    通常由AI分析服务自动创建，也可手动创建。
    新增 Tier0 图字段 + audience + confidence。
    """

    suggestion_type: str = Field(
        ...,
        description="建议类型：new_faq=新增FAQ/update=更新/outdated=标记过时",
    )
    title: str = Field(..., description="建议标题", max_length=256)
    content: str = Field(..., description="答案内容")
    category: str = Field(default="其他", description="分类")
    tags: List[str] = Field(default_factory=list, description="标签列表")
    source_type: str = Field(
        ...,
        description="分析来源：annotation=标注数据/conversation=会话数据/ai_uncertain=AI不确定/manual=手动录入/document_ragflow=RAGFlow文档",
    )
    source_data: Optional[List[str]] = Field(
        default=None, description="相关会话ID或标注ID列表"
    )
    reason: Optional[str] = Field(default=None, description="生成理由")

    # ── Tier0 扩展字段 ──
    confidence: Optional[float] = Field(
        default=None, description="AI 生成置信度（0.0-1.0）", ge=0.0, le=1.0
    )
    audience: Optional[AudienceEnum] = Field(
        default=None, description="受众类型"
    )
    issue: Optional[str] = Field(
        default=None, description="图节点：问题名称", max_length=256
    )
    action: Optional[str] = Field(
        default=None, description="图节点：动作名称", max_length=256
    )
    relation_type: Optional[RelationTypeEnum] = Field(
        default=None, description="图关系类型"
    )
    parent_issue: Optional[str] = Field(
        default=None, description="父 Issue 名称", max_length=256
    )
    graph_meta: Optional[Dict[str, Any]] = Field(
        default=None, description="图结构扩展元数据"
    )


# -----------------------------------------------------------------------------
# 审核建议请求 Schema
# -----------------------------------------------------------------------------
class KnowledgeSuggestionApprove(BaseModel):
    """审核通过知识库优化建议请求 Schema。"""

    pass


class KnowledgeSuggestionReject(BaseModel):
    """拒绝知识库优化建议请求 Schema。"""

    reject_reason: str = Field(..., description="拒绝理由", max_length=500)


# -----------------------------------------------------------------------------
# 改写建议请求 Schema（Tier0 新增 — 训练师改写提案）
# -----------------------------------------------------------------------------
class KnowledgeSuggestionRewrite(BaseModel):
    """训练师改写知识库优化建议请求 Schema。

    坐席/训练师在审批时可直接修改提案内容后重新提交审批。
    改写后状态重置为 pending，重新走审批流程。
    """

    title: Optional[str] = Field(default=None, description="修改后的标题", max_length=256)
    content: Optional[str] = Field(default=None, description="修改后的内容")
    category: Optional[str] = Field(default=None, description="修改后的分类")
    tags: Optional[List[str]] = Field(default=None, description="修改后的标签列表")
    confidence: Optional[float] = Field(
        default=None, description="修改后的置信度", ge=0.0, le=1.0
    )
    audience: Optional[AudienceEnum] = Field(
        default=None, description="修改后的受众类型"
    )
    issue: Optional[str] = Field(
        default=None, description="修改后的图节点：问题名称", max_length=256
    )
    action: Optional[str] = Field(
        default=None, description="修改后的图节点：动作名称", max_length=256
    )
    relation_type: Optional[RelationTypeEnum] = Field(
        default=None, description="修改后的图关系类型"
    )
    parent_issue: Optional[str] = Field(
        default=None, description="修改后的父 Issue 名称", max_length=256
    )


# -----------------------------------------------------------------------------
# 合并建议请求 Schema（任务3：P2 知识去重合并）
# -----------------------------------------------------------------------------
class KnowledgeSuggestionMerge(BaseModel):
    """合并重复建议请求 Schema。

    将 duplicate_id 的建议合并到当前建议（primary），
    重复建议状态变为 rejected（合并归入）。
    """

    duplicate_id: str = Field(..., description="要合并的重复建议ID")


# -----------------------------------------------------------------------------
# 知识库优化建议响应 Schema
# -----------------------------------------------------------------------------
class KnowledgeSuggestionResponse(BaseModel):
    """知识库优化建议响应 Schema。

    返回建议记录详情，包含 Tier0 所有扩展字段。
    """

    id: str = Field(..., description="建议ID")
    suggestion_type: str = Field(..., description="建议类型")
    status: str = Field(..., description="状态")
    title: str = Field(..., description="标题")
    content: str = Field(..., description="内容")
    category: str = Field(..., description="分类")
    tags: List[str] = Field(default_factory=list, description="标签列表")
    source_type: str = Field(..., description="分析来源")
    source_data: Optional[List[str]] = Field(default=None, description="来源数据")
    reason: Optional[str] = Field(default=None, description="生成理由")
    reject_reason: Optional[str] = Field(default=None, description="拒绝理由")
    reviewer_id: Optional[str] = Field(default=None, description="审核人ID")
    reviewed_at: Optional[datetime] = Field(default=None, description="审核时间")

    # ── Tier0 扩展字段 ──
    confidence: Optional[float] = Field(default=None, description="AI 生成置信度")
    audience: Optional[str] = Field(default=None, description="受众类型")
    issue: Optional[str] = Field(default=None, description="图节点：问题名称")
    action: Optional[str] = Field(default=None, description="图节点：动作名称")
    relation_type: Optional[str] = Field(default=None, description="图关系类型")
    parent_issue: Optional[str] = Field(default=None, description="父 Issue 名称")
    graph_meta: Optional[Dict[str, Any]] = Field(
        default=None, description="图结构扩展元数据"
    )
    graph_sync_status: Optional[str] = Field(
        default="pending", description="图同步状态"
    )
    source_failed: bool = Field(default=False, description="AI 生成失败标记")
    queued_at: Optional[datetime] = Field(default=None, description="入队列时间")
    applied_at: Optional[datetime] = Field(default=None, description="应用到 KB 的时间")
    created_at: datetime = Field(..., description="创建时间")
    updated_at: datetime = Field(..., description="更新时间")

    class Config:
        from_attributes = True


# -----------------------------------------------------------------------------
# 知识库优化建议列表响应 Schema
# -----------------------------------------------------------------------------
class KnowledgeSuggestionListResponse(BaseModel):
    """知识库优化建议列表响应 Schema。"""

    total: int = Field(..., description="总数量")
    items: List[KnowledgeSuggestionResponse] = Field(..., description="建议列表")


# -----------------------------------------------------------------------------
# 知识库优化建议统计 Schema
# -----------------------------------------------------------------------------
class KnowledgeSuggestionStatsResponse(BaseModel):
    """知识库优化建议统计响应 Schema。"""

    total: int = Field(..., description="总建议数")
    pending: int = Field(..., description="待审核数")
    queued: int = Field(0, description="队列中数")
    approved: int = Field(..., description="已通过数")
    rejected: int = Field(..., description="已拒绝数")
    applied: int = Field(..., description="已应用数")
    graph_synced: int = Field(0, description="图已同步数")
    expired: int = Field(0, description="已过期数")
    new_faq_count: int = Field(..., description="新增FAQ建议数")
    update_count: int = Field(..., description="更新建议数")
    outdated_count: int = Field(..., description="过时标记数")