"""组织管理API"""
from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select, and_
from typing import List, Optional
from pydantic import BaseModel, Field
import json

from app.database import get_db
from app.models.relationship import Organization, OrganizationMember
from app.models.character import Character
from app.models.project import Project
from app.models.generation_history import GenerationHistory
from app.schemas.relationship import (
    OrganizationCreate,
    OrganizationUpdate,
    OrganizationResponse,
    OrganizationDetailResponse,
    OrganizationMemberCreate,
    OrganizationMemberUpdate,
    OrganizationMemberResponse,
    OrganizationMemberDetailResponse
)
from app.schemas.character import CharacterResponse
from app.services.ai_service import AIService
from app.services.prompt_service import prompt_service
from app.logger import get_logger
from app.api.settings import get_user_ai_service

router = APIRouter(prefix="/organizations", tags=["组织管理"])
logger = get_logger(__name__)


class OrganizationGenerateRequest(BaseModel):
    """AI生成组织的请求模型"""
    project_id: str = Field(..., description="项目ID")
    name: Optional[str] = Field(None, description="组织名称")
    organization_type: Optional[str] = Field(None, description="组织类型")
    background: Optional[str] = Field(None, description="组织背景")
    requirements: Optional[str] = Field(None, description="特殊要求")


@router.get("/project/{project_id}", response_model=List[OrganizationDetailResponse], summary="获取项目的所有组织")
async def get_project_organizations(
    project_id: str,
    db: AsyncSession = Depends(get_db)
):
    """
    获取项目中的所有组织及其详情
    
    返回组织的基本信息和统计数据
    """
    result = await db.execute(
        select(Organization).where(Organization.project_id == project_id)
    )
    organizations = result.scalars().all()
    
    # 获取每个组织的角色信息
    org_list = []
    for org in organizations:
        char_result = await db.execute(
            select(Character).where(Character.id == org.character_id)
        )
        char = char_result.scalar_one_or_none()
        
        if char:
            org_list.append(OrganizationDetailResponse(
                id=org.id,
                character_id=org.character_id,
                name=char.name,
                type=char.organization_type,
                purpose=char.organization_purpose,
                member_count=org.member_count,
                power_level=org.power_level,
                location=org.location,
                motto=org.motto,
                color=org.color
            ))
    
    logger.info(f"获取项目 {project_id} 的组织列表，共 {len(org_list)} 个")
    return org_list


@router.get("/{org_id}", response_model=OrganizationResponse, summary="获取组织详情")
async def get_organization(
    org_id: str,
    db: AsyncSession = Depends(get_db)
):
    """获取组织的详细信息"""
    result = await db.execute(
        select(Organization).where(Organization.id == org_id)
    )
    org = result.scalar_one_or_none()
    
    if not org:
        raise HTTPException(status_code=404, detail="组织不存在")
    
    return org


@router.post("/", response_model=OrganizationResponse, summary="创建组织")
async def create_organization(
    organization: OrganizationCreate,
    db: AsyncSession = Depends(get_db)
):
    """
    创建新组织
    
    - 需要关联到一个已存在的角色记录（is_organization=True）
    - 可以设置父组织、势力等级等属性
    """
    # 验证角色是否存在且是组织
    char_result = await db.execute(
        select(Character).where(Character.id == organization.character_id)
    )
    char = char_result.scalar_one_or_none()
    
    if not char:
        raise HTTPException(status_code=404, detail="关联的角色不存在")
    if not char.is_organization:
        raise HTTPException(status_code=400, detail="关联的角色不是组织类型")
    
    # 检查是否已存在
    existing = await db.execute(
        select(Organization).where(Organization.character_id == organization.character_id)
    )
    if existing.scalar_one_or_none():
        raise HTTPException(status_code=400, detail="该角色已有组织详情记录")
    
    # 创建组织
    db_org = Organization(**organization.model_dump())
    db.add(db_org)
    await db.commit()
    await db.refresh(db_org)
    
    logger.info(f"创建组织成功：{db_org.id} - {char.name}")
    return db_org


@router.put("/{org_id}", response_model=OrganizationResponse, summary="更新组织")
async def update_organization(
    org_id: str,
    organization: OrganizationUpdate,
    db: AsyncSession = Depends(get_db)
):
    """更新组织的属性"""
    result = await db.execute(
        select(Organization).where(Organization.id == org_id)
    )
    db_org = result.scalar_one_or_none()
    
    if not db_org:
        raise HTTPException(status_code=404, detail="组织不存在")
    
    # 更新字段
    update_data = organization.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(db_org, field, value)
    
    await db.commit()
    await db.refresh(db_org)
    
    logger.info(f"更新组织成功：{org_id}")
    return db_org


@router.delete("/{org_id}", summary="删除组织")
async def delete_organization(
    org_id: str,
    db: AsyncSession = Depends(get_db)
):
    """删除组织（会级联删除所有成员关系）"""
    result = await db.execute(
        select(Organization).where(Organization.id == org_id)
    )
    db_org = result.scalar_one_or_none()
    
    if not db_org:
        raise HTTPException(status_code=404, detail="组织不存在")
    
    await db.delete(db_org)
    await db.commit()
    
    logger.info(f"删除组织成功：{org_id}")
    return {"message": "组织删除成功", "id": org_id}


# ============ 组织成员管理 ============

@router.get("/{org_id}/members", response_model=List[OrganizationMemberDetailResponse], summary="获取组织成员")
async def get_organization_members(
    org_id: str,
    db: AsyncSession = Depends(get_db)
):
    """
    获取组织的所有成员
    
    按职位等级（rank）降序排列
    """
    # 验证组织存在
    org_result = await db.execute(
        select(Organization).where(Organization.id == org_id)
    )
    if not org_result.scalar_one_or_none():
        raise HTTPException(status_code=404, detail="组织不存在")
    
    # 获取成员列表
    result = await db.execute(
        select(OrganizationMember)
        .where(OrganizationMember.organization_id == org_id)
        .order_by(OrganizationMember.rank.desc(), OrganizationMember.created_at)
    )
    members = result.scalars().all()
    
    # 获取成员角色信息
    member_list = []
    for member in members:
        char_result = await db.execute(
            select(Character).where(Character.id == member.character_id)
        )
        char = char_result.scalar_one_or_none()
        
        if char:
            member_list.append(OrganizationMemberDetailResponse(
                id=member.id,
                character_id=member.character_id,
                character_name=char.name,
                position=member.position,
                rank=member.rank,
                loyalty=member.loyalty,
                contribution=member.contribution,
                status=member.status,
                joined_at=member.joined_at,
                left_at=member.left_at,
                notes=member.notes
            ))
    
    logger.info(f"获取组织 {org_id} 的成员列表，共 {len(member_list)} 人")
    return member_list


@router.post("/{org_id}/members", response_model=OrganizationMemberResponse, summary="添加组织成员")
async def add_organization_member(
    org_id: str,
    member: OrganizationMemberCreate,
    db: AsyncSession = Depends(get_db)
):
    """
    添加角色到组织
    
    - 一个角色在同一组织中只能有一个职位
    - 会自动更新组织的成员计数
    """
    # 验证组织存在
    org_result = await db.execute(
        select(Organization).where(Organization.id == org_id)
    )
    org = org_result.scalar_one_or_none()
    if not org:
        raise HTTPException(status_code=404, detail="组织不存在")
    
    # 验证角色存在
    char_result = await db.execute(
        select(Character).where(Character.id == member.character_id)
    )
    char = char_result.scalar_one_or_none()
    if not char:
        raise HTTPException(status_code=404, detail="角色不存在")
    if char.is_organization:
        raise HTTPException(status_code=400, detail="不能将组织添加为成员")
    
    # 检查是否已存在
    existing = await db.execute(
        select(OrganizationMember).where(
            and_(
                OrganizationMember.organization_id == org_id,
                OrganizationMember.character_id == member.character_id
            )
        )
    )
    if existing.scalar_one_or_none():
        raise HTTPException(status_code=400, detail="该角色已在组织中")
    
    # 创建成员关系
    db_member = OrganizationMember(
        organization_id=org_id,
        **member.model_dump(),
        source="manual"
    )
    db.add(db_member)
    
    # 更新组织成员计数
    org.member_count += 1
    
    await db.commit()
    await db.refresh(db_member)
    
    logger.info(f"添加成员成功：{char.name} 加入组织 {org_id}")
    return db_member


@router.put("/members/{member_id}", response_model=OrganizationMemberResponse, summary="更新成员信息")
async def update_organization_member(
    member_id: str,
    member: OrganizationMemberUpdate,
    db: AsyncSession = Depends(get_db)
):
    """更新组织成员的职位、忠诚度等信息"""
    result = await db.execute(
        select(OrganizationMember).where(OrganizationMember.id == member_id)
    )
    db_member = result.scalar_one_or_none()
    
    if not db_member:
        raise HTTPException(status_code=404, detail="成员记录不存在")
    
    # 更新字段
    update_data = member.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(db_member, field, value)
    
    await db.commit()
    await db.refresh(db_member)
    
    logger.info(f"更新成员信息成功：{member_id}")
    return db_member


@router.delete("/members/{member_id}", summary="移除组织成员")
async def remove_organization_member(
    member_id: str,
    db: AsyncSession = Depends(get_db)
):
    """
    从组织中移除成员
    
    会自动更新组织的成员计数
    """
    result = await db.execute(
        select(OrganizationMember).where(OrganizationMember.id == member_id)
    )
    db_member = result.scalar_one_or_none()
    
    if not db_member:
        raise HTTPException(status_code=404, detail="成员记录不存在")
    
    # 更新组织成员计数
    org_result = await db.execute(
        select(Organization).where(Organization.id == db_member.organization_id)
    )
    org = org_result.scalar_one()
    org.member_count = max(0, org.member_count - 1)
    
    await db.delete(db_member)
    await db.commit()
    
    logger.info(f"移除成员成功：{member_id}")
    return {"message": "成员移除成功", "id": member_id}

@router.post("/generate", response_model=CharacterResponse, summary="AI生成组织")
async def generate_organization(
    request: OrganizationGenerateRequest,
    db: AsyncSession = Depends(get_db),
    user_ai_service: AIService = Depends(get_user_ai_service)
):
    """
    使用AI生成组织设定
    
    根据用户输入的信息，结合项目的世界观、主题等背景，
    AI会生成一个完整、详细的组织设定。
    
    生成内容包括：组织名称、类型、特性、背景、目的、势力等级等
    """
    # 验证项目是否存在并获取项目信息
    result = await db.execute(
        select(Project).where(Project.id == request.project_id)
    )
    project = result.scalar_one_or_none()
    if not project:
        raise HTTPException(status_code=404, detail="项目不存在")
    
    try:
        # 获取已存在的角色和组织列表
        existing_chars_result = await db.execute(
            select(Character)
            .where(Character.project_id == request.project_id)
            .order_by(Character.created_at.desc())
        )
        existing_characters = existing_chars_result.scalars().all()
        
        # 构建现有角色和组织信息摘要
        existing_info = ""
        character_list = []
        organization_list = []
        
        if existing_characters:
            for c in existing_characters[:10]:  # 最多显示10个
                if c.is_organization:
                    organization_list.append(f"- {c.name} [{c.organization_type or '组织'}]")
                else:
                    character_list.append(f"- {c.name}（{c.role_type or '未知'}）")
            
            if character_list:
                existing_info += "\n已有角色：\n" + "\n".join(character_list)
            if organization_list:
                existing_info += "\n\n已有组织：\n" + "\n".join(organization_list)
        
        # 构建项目上下文信息
        project_context = f"""
项目信息：
- 书名：{project.title}
- 主题：{project.theme or '未设定'}
- 类型：{project.genre or '未设定'}
- 时间背景：{project.world_time_period or '未设定'}
- 地理位置：{project.world_location or '未设定'}
- 氛围基调：{project.world_atmosphere or '未设定'}
- 世界规则：{project.world_rules or '未设定'}
{existing_info}
"""
        
        # 构建用户输入信息
        user_input = f"""
用户要求：
- 组织名称：{request.name or '请AI生成'}
- 组织类型：{request.organization_type or '请AI根据世界观决定'}
- 背景设定：{request.background or '无特殊要求'}
- 其他要求：{request.requirements or '无'}
"""
        
        # 使用统一的提示词服务
        prompt = prompt_service.get_single_organization_prompt(
            project_context=project_context,
            user_input=user_input
        )
        
        # 调用AI生成组织
        logger.info(f"🎯 开始为项目 {request.project_id} 生成组织")
        logger.info(f"  - 组织名：{request.name or 'AI生成'}")
        logger.info(f"  - 组织类型：{request.organization_type or 'AI决定'}")
        logger.info(f"  - 背景设定：{request.background or '无'}")
        logger.info(f"  - AI提供商：{user_ai_service.api_provider}")
        logger.info(f"  - AI模型：{user_ai_service.default_model}")
        logger.info(f"  - Prompt长度：{len(prompt)} 字符")
        
        try:
            ai_response = await user_ai_service.generate_text(prompt=prompt)
            logger.info(f"✅ AI响应接收完成，长度：{len(ai_response) if ai_response else 0} 字符")
        except Exception as ai_error:
            logger.error(f"❌ AI服务调用异常：{str(ai_error)}")
            raise HTTPException(
                status_code=500,
                detail=f"AI服务调用失败：{str(ai_error)}"
            )
        
        # 检查AI响应
        if not ai_response or not ai_response.strip():
            logger.error("❌ AI返回了空响应")
            raise HTTPException(
                status_code=500,
                detail="AI服务返回空响应。请检查AI配置和网络连接。"
            )
        
        logger.info(f"📝 开始清理AI响应")
        # 清理AI响应
        cleaned_response = ai_response.strip()
        if cleaned_response.startswith("```json"):
            cleaned_response = cleaned_response[7:]
        if cleaned_response.startswith("```"):
            cleaned_response = cleaned_response[3:]
        if cleaned_response.endswith("```"):
            cleaned_response = cleaned_response[:-3]
        cleaned_response = cleaned_response.strip()
        
        logger.info(f"  - 清理后长度：{len(cleaned_response)}")
        
        # 解析AI响应
        logger.info(f"🔍 开始解析JSON")
        try:
            organization_data = json.loads(cleaned_response)
            logger.info(f"✅ JSON解析成功")
            logger.info(f"  - 解析后的字段：{list(organization_data.keys())}")
        except json.JSONDecodeError as e:
            logger.error(f"❌ JSON解析失败：{str(e)}")
            raise HTTPException(
                status_code=500,
                detail=f"AI返回的内容无法解析为JSON。错误：{str(e)}"
            )
        
        # 创建角色记录（组织也是角色的一种）
        character = Character(
            project_id=request.project_id,
            name=organization_data.get("name", request.name or "未命名组织"),
            is_organization=True,
            role_type="supporting",  # 组织通常作为配角
            personality=organization_data.get("personality", ""),
            background=organization_data.get("background", ""),
            appearance=organization_data.get("appearance", ""),
            organization_type=organization_data.get("organization_type"),
            organization_purpose=organization_data.get("organization_purpose"),
            organization_members=json.dumps(
                organization_data.get("organization_members", []), 
                ensure_ascii=False
            ),
            traits=json.dumps(
                organization_data.get("traits", []), 
                ensure_ascii=False
            )
        )
        db.add(character)
        await db.flush()
        
        logger.info(f"✅ 组织角色创建成功：{character.name} (ID: {character.id})")
        
        # 自动创建Organization详情记录
        organization = Organization(
            character_id=character.id,
            project_id=request.project_id,
            member_count=0,
            power_level=organization_data.get("power_level", 50),
            location=organization_data.get("location"),
            motto=organization_data.get("motto"),
            color=organization_data.get("color")
        )
        db.add(organization)
        await db.flush()
        
        logger.info(f"✅ 组织详情创建成功：{character.name} (Org ID: {organization.id})")
        
        # 记录生成历史
        history = GenerationHistory(
            project_id=request.project_id,
            prompt=prompt,
            generated_content=ai_response,
            model=user_ai_service.default_model
        )
        db.add(history)
        
        await db.commit()
        await db.refresh(character)
        
        logger.info(f"🎉 成功为项目 {request.project_id} 生成组织: {character.name}")
        
        return character
        
    except Exception as e:
        logger.error(f"生成组织失败: {str(e)}")
        raise HTTPException(status_code=500, detail=f"生成组织失败: {str(e)}")