from datetime import datetime
from typing import Optional, Dict, List
from sqlmodel import SQLModel, Field, Column, JSON, Text
from enum import Enum

class LogSource(str, Enum):
    RUNTIME = "runtime"
    CICD = "cicd"
    DEPLOYMENT = "deployment"

class LogStatus(str, Enum):
    NEW = "NEW"
    VERIFYING = "VERIFYING"
    CANNOT_REPRODUCE = "CANNOT_REPRODUCE"
    PENDING_FIX = "PENDING_FIX"
    FIXING = "FIXING"
    FIXED = "FIXED"
    VERIFIED = "VERIFIED"
    DEPLOYED = "DEPLOYED"
    FIX_FAILED = "FIX_FAILED"

class Project(SQLModel, table=True):
    """项目信息"""
    id: Optional[int] = Field(default=None, primary_key=True)
    project_id: str = Field(unique=True, index=True)
    name: Optional[str] = Field(default=None)
    repo_url: Optional[str] = Field(default=None)
    local_path: Optional[str] = Field(default=None)
    description: Optional[str] = Field(default=None)
    created_at: datetime = Field(default_factory=datetime.utcnow)
    updated_at: datetime = Field(default_factory=datetime.utcnow)

class ProjectUpdate(SQLModel):
    """项目编辑 schema"""
    name: Optional[str] = None
    repo_url: Optional[str] = None
    local_path: Optional[str] = None
    description: Optional[str] = None

class ErrorLog(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    project_id: str = Field(index=True)
    environment: str
    level: str

    # Source
    source: str = Field(default="runtime", index=True)

    # Error Details
    error_type: str
    error_message: str
    file_path: Optional[str] = None
    line_number: Optional[int] = None
    stack_trace: str = Field(sa_column=Column(JSON)) # Store full stack trace

    # Context
    context: Dict = Field(default={}, sa_column=Column(JSON))

    # Versioning
    version: Optional[str] = None
    commit_hash: Optional[str] = None

    # Meta
    timestamp: datetime = Field(default_factory=datetime.utcnow)
    fingerprint: str = Field(unique=True, index=True) # project_id + error_type + file_path + line_number

    # Severity (1-10, AI 评估的严重等级，8+ 需人工审核)
    severity: Optional[int] = Field(default=None)
    severity_reason: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))

    # Status Tracking
    status: LogStatus = Field(default=LogStatus.NEW)
    retry_count: int = Field(default=0)

    # Repair Tracking
    failure_reason: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))

    # PR Tracking
    pr_number: Optional[int] = Field(default=None)
    pr_url: Optional[str] = Field(default=None)
    branch_name: Optional[str] = Field(default=None)

    # Rejection Tracking
    rejection_reason: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))
    rejection_count: int = Field(default=0)
    last_rejected_at: Optional[datetime] = None
    merged_at: Optional[datetime] = None

# Pydantic Models for API
class ErrorLogCreate(SQLModel):
    project_id: str
    environment: str
    level: str
    timestamp: Optional[datetime] = None
    version: Optional[str] = None
    commit_hash: Optional[str] = None
    repo_url: Optional[str] = None

    source: str = "runtime"
    error: Dict # {type, message, file_path, line_number, stack_trace}
    context: Optional[Dict] = {}

class TaskStatusUpdate(SQLModel):
    status: LogStatus
    message: Optional[str] = None

class RepairTask(SQLModel, table=True):
    """Record of a repair attempt (one per batch, may cover multiple bugs)"""
    id: Optional[int] = Field(default=None, primary_key=True)
    error_log_ids: List[int] = Field(sa_column=Column(JSON))  # 关联的 Bug ID 列表
    status: LogStatus
    project_id: str

    # Repair Details
    ai_analysis: str = Field(sa_column=Column(Text))
    fix_plan: str = Field(sa_column=Column(Text))
    code_diff: str = Field(sa_column=Column(Text))
    modified_files: List[str] = Field(sa_column=Column(JSON))

    # Test Results
    test_output: str = Field(sa_column=Column(Text))
    test_passed: bool

    # Repair Round Tracking
    repair_round: int = Field(default=1)
    failure_reason: Optional[str] = Field(default=None, sa_column=Column(Text, nullable=True))

    # PR Info
    pr_url: Optional[str] = Field(default=None)
    pr_number: Optional[int] = Field(default=None)
    branch_name: Optional[str] = Field(default=None)

    created_at: datetime = Field(default_factory=datetime.utcnow)

class RepairTaskCreate(SQLModel):
    """Schema for creating a repair report via API"""
    error_log_ids: List[int]
    status: LogStatus
    project_id: str
    ai_analysis: str
    fix_plan: str
    code_diff: str
    modified_files: List[str]
    test_output: str
    test_passed: bool
    repair_round: int = 1
    failure_reason: Optional[str] = None
    pr_url: Optional[str] = None
    pr_number: Optional[int] = None
    branch_name: Optional[str] = None