from sqlalchemy import Column, Integer, BigInteger, String, DateTime, Float, Boolean, Text, ForeignKey, Enum, Index
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from datetime import datetime, timezone, timedelta
import enum

# 한국 시간대 설정
KST = timezone(timedelta(hours=9))

def get_kst_now():
    """현재 한국 시간 반환"""
    return datetime.now(KST)

Base = declarative_base()

class UserRole(str, enum.Enum):
    admin = "admin"  # 관리자
    user = "user"    # 일반 사용자

class IssueStatus(str, enum.Enum):
    new = "new"
    progress = "progress"
    complete = "complete"

class IssueCategory(str, enum.Enum):
    material_missing = "material_missing"
    design_error = "design_error"  # 설계미스 (기존 dimension_defect 대체)
    incoming_defect = "incoming_defect"
    inspection_miss = "inspection_miss"  # 검사미스 (신규 추가)
    etc = "etc"  # 기타

class ReviewStatus(str, enum.Enum):
    pending_review = "pending_review"    # 수신함 (검토 대기)
    in_progress = "in_progress"          # 관리함 (진행 중)
    completed = "completed"              # 관리함 (완료됨)
    disposed = "disposed"                # 폐기함 (폐기됨)

class DisposalReasonType(str, enum.Enum):
    duplicate = "duplicate"              # 중복 (기본값)
    invalid_report = "invalid_report"    # 잘못된 신고
    not_applicable = "not_applicable"    # 해당 없음
    spam = "spam"                        # 스팸/오류
    custom = "custom"                    # 직접 입력

class DepartmentType(str, enum.Enum):
    production = "production"            # 생산
    quality = "quality"                  # 품질
    purchasing = "purchasing"            # 구매
    design = "design"                    # 설계
    sales = "sales"                      # 영업

class User(Base):
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String, unique=True, index=True, nullable=False)
    hashed_password = Column(String, nullable=False)
    full_name = Column(String)
    role = Column(Enum(UserRole), default=UserRole.user)
    department = Column(Enum(DepartmentType))  # 부서 정보 추가
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime, default=get_kst_now)
    
    # Relationships
    issues = relationship("Issue", back_populates="reporter", foreign_keys="Issue.reporter_id")
    reviewed_issues = relationship("Issue", foreign_keys="Issue.reviewed_by_id")
    daily_works = relationship("DailyWork", back_populates="created_by")
    projects = relationship("Project", back_populates="created_by")
    page_permissions = relationship("UserPagePermission", back_populates="user", foreign_keys="UserPagePermission.user_id")

class UserPagePermission(Base):
    __tablename__ = "user_page_permissions"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    page_name = Column(String(50), nullable=False)
    can_access = Column(Boolean, default=False)
    granted_by_id = Column(Integer, ForeignKey("users.id"))
    granted_at = Column(DateTime, default=get_kst_now)
    notes = Column(Text)
    
    # Relationships
    user = relationship("User", back_populates="page_permissions", foreign_keys=[user_id])
    granted_by = relationship("User", foreign_keys=[granted_by_id], post_update=True)
    
    # Unique constraint
    __table_args__ = (
        Index('idx_user_page_permissions_user_id', 'user_id'),
        Index('idx_user_page_permissions_page_name', 'page_name'),
    )

class Issue(Base):
    __tablename__ = "issues"
    
    id = Column(Integer, primary_key=True, index=True)
    photo_path = Column(String)
    photo_path2 = Column(String)  # 두 번째 사진 경로
    category = Column(Enum(IssueCategory), nullable=False)
    description = Column(Text, nullable=False)
    status = Column(Enum(IssueStatus), default=IssueStatus.new)
    reporter_id = Column(Integer, ForeignKey("users.id"))
    project_id = Column(BigInteger, ForeignKey("projects.id"))
    report_date = Column(DateTime, default=get_kst_now)
    work_hours = Column(Float, default=0)
    detail_notes = Column(Text)
    
    # 수신함 워크플로우 관련 컬럼들
    review_status = Column(Enum(ReviewStatus), default=ReviewStatus.pending_review)
    disposal_reason = Column(Enum(DisposalReasonType))
    custom_disposal_reason = Column(Text)
    disposed_at = Column(DateTime)
    reviewed_by_id = Column(Integer, ForeignKey("users.id"))
    reviewed_at = Column(DateTime)
    original_data = Column(JSONB)  # 원본 데이터 보존
    modification_log = Column(JSONB, default=lambda: [])  # 수정 이력
    
    # 중복 신고 추적 시스템
    duplicate_of_issue_id = Column(Integer, ForeignKey("issues.id"))  # 중복 대상 이슈 ID
    duplicate_reporters = Column(JSONB, default=lambda: [])  # 중복 신고자 목록
    
    # 관리함에서 사용할 추가 필드들
    completion_photo_path = Column(String)  # 완료 사진 경로
    solution = Column(Text)  # 해결방안 (관리함에서 입력)
    responsible_department = Column(Enum(DepartmentType))  # 담당부서
    responsible_person = Column(String(100))  # 담당자
    expected_completion_date = Column(DateTime)  # 조치 예상일
    actual_completion_date = Column(DateTime)  # 완료 확인일
    cause_department = Column(Enum(DepartmentType))  # 원인부서
    management_comment = Column(Text)  # ISSUE에 대한 의견
    project_sequence_no = Column(Integer)  # 프로젝트별 순번 (No)
    final_description = Column(Text)  # 최종 내용 (수정본 또는 원본)
    final_category = Column(Enum(IssueCategory))  # 최종 카테고리 (수정본 또는 원본)
    
    # 추가 정보 필드들 (관리함에서 기록용)
    responsible_person_detail = Column(String(200))  # 해당자 상세 정보
    cause_detail = Column(Text)  # 원인 상세 정보
    additional_info_updated_at = Column(DateTime)  # 추가 정보 입력 시간
    additional_info_updated_by_id = Column(Integer, ForeignKey("users.id"))  # 추가 정보 입력자
    
    # 완료 신청 관련 필드들
    completion_requested_at = Column(DateTime)  # 완료 신청 시간
    completion_requested_by_id = Column(Integer, ForeignKey("users.id"))  # 완료 신청자
    completion_photo_path = Column(String(500))  # 완료 사진 경로
    completion_comment = Column(Text)  # 완료 코멘트
    
    # Relationships
    reporter = relationship("User", back_populates="issues", foreign_keys=[reporter_id])
    reviewer = relationship("User", foreign_keys=[reviewed_by_id], overlaps="reviewed_issues")
    project = relationship("Project", back_populates="issues")
    duplicate_of = relationship("Issue", remote_side=[id], foreign_keys=[duplicate_of_issue_id])

class Project(Base):
    __tablename__ = "projects"
    
    id = Column(BigInteger, primary_key=True, index=True)
    job_no = Column(String, unique=True, nullable=False, index=True)
    project_name = Column(String, nullable=False)
    created_by_id = Column(Integer, ForeignKey("users.id"))
    created_at = Column(DateTime, default=get_kst_now)
    is_active = Column(Boolean, default=True)
    
    # Relationships
    created_by = relationship("User", back_populates="projects")
    issues = relationship("Issue", back_populates="project")

class DailyWork(Base):
    __tablename__ = "daily_works"
    
    id = Column(Integer, primary_key=True, index=True)
    date = Column(DateTime, nullable=False, index=True)
    worker_count = Column(Integer, nullable=False)
    regular_hours = Column(Float, nullable=False)
    overtime_workers = Column(Integer, default=0)
    overtime_hours = Column(Float, default=0)
    overtime_total = Column(Float, default=0)
    total_hours = Column(Float, nullable=False)
    created_by_id = Column(Integer, ForeignKey("users.id"))
    created_at = Column(DateTime, default=get_kst_now)
    
    # Relationships
    created_by = relationship("User", back_populates="daily_works")

class ProjectDailyWork(Base):
    __tablename__ = "project_daily_works"
    
    id = Column(Integer, primary_key=True, index=True)
    date = Column(DateTime, nullable=False, index=True)
    project_id = Column(BigInteger, ForeignKey("projects.id"), nullable=False)
    hours = Column(Float, nullable=False)
    created_by_id = Column(Integer, ForeignKey("users.id"))
    created_at = Column(DateTime, default=get_kst_now)
    
    # Relationships
    project = relationship("Project")
    created_by = relationship("User")