from sqlalchemy import Column, Integer, String, Text, Boolean, Float, Date, TIMESTAMP, ARRAY, ForeignKey, func
from sqlalchemy.orm import relationship
from database import Base

class ChargerType(Base):
    __tablename__ = "charger_types"
    id = Column(Integer, primary_key=True)
    name = Column(String(100), nullable=False)
    description = Column(Text)
    created_at = Column(TIMESTAMP, server_default=func.now())
    chargers = relationship("Charger", back_populates="charger_type")
    errors = relationship("ChargerTypeError", back_populates="charger_type",
                         cascade="all, delete-orphan", order_by="ChargerTypeError.display_order")

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True)
    username = Column(String(50), unique=True, nullable=False)
    password_hash = Column(String(255), nullable=False)
    role = Column(String(20), nullable=False)
    company = Column(String(100))
    name = Column(String(50), nullable=False)
    phone = Column(String(20))
    email = Column(String(100))
    is_active = Column(Boolean, default=True)
    is_pending = Column(Boolean, default=False)
    created_at = Column(TIMESTAMP, server_default=func.now())

class Charger(Base):
    __tablename__ = "chargers"
    id = Column(String(50), primary_key=True)
    charger_type_id = Column(Integer, ForeignKey("charger_types.id"))
    name = Column(String(100), nullable=False)
    station_name = Column(String(100), nullable=False)
    location_detail = Column(Text)
    cpo_name = Column(String(100))
    installed_at = Column(Date)
    gps_lat = Column(Float)
    gps_lng = Column(Float)
    is_active = Column(Boolean, default=True)
    created_at = Column(TIMESTAMP, server_default=func.now())
    charger_type = relationship("ChargerType", back_populates="chargers")
    reports = relationship("Report", back_populates="charger")

class Report(Base):
    __tablename__ = "reports"
    id = Column(Integer, primary_key=True)
    charger_id = Column(String(50), ForeignKey("chargers.id"))
    issue_types = Column(ARRAY(Text), nullable=False)
    issue_detail = Column(Text)
    error_code = Column(String(100))
    occurred_at = Column(TIMESTAMP)
    contact = Column(String(20))
    consent = Column(Boolean, default=False)
    gps_lat = Column(Float)
    gps_lng = Column(Float)
    status = Column(String(30), default="pending")
    ocpp_log = Column(Text)
    source = Column(String(20), default="qr")       # qr | admin
    reported_by = Column(Integer, ForeignKey("users.id"), nullable=True)
    reported_at = Column(TIMESTAMP, server_default=func.now())
    closure_type = Column(String(30))               # natural|remote_reset|false_alarm|other
    closure_note = Column(Text)
    closed_at    = Column(TIMESTAMP)
    closed_by    = Column(Integer, ForeignKey("users.id"), nullable=True)
    re_dispatch_count = Column(Integer, default=0)
    report_scope = Column(String(20), default="single")    # single | station | type | multi
    scope_charger_count = Column(Integer, default=1)
    charger_ids = Column(ARRAY(Text), nullable=True)       # multi 범위일 때 선택된 충전기 ID 목록
    charger = relationship("Charger", back_populates="reports")
    photos = relationship("ReportPhoto", back_populates="report", cascade="all, delete-orphan")
    repair_links = relationship("RepairReport", back_populates="report")
    reporter = relationship("User", foreign_keys=[reported_by])
    closer   = relationship("User", foreign_keys=[closed_by])

class ReportPhoto(Base):
    __tablename__ = "report_photos"
    id = Column(Integer, primary_key=True)
    report_id = Column(Integer, ForeignKey("reports.id", ondelete="CASCADE"))
    file_path = Column(String(255), nullable=False)
    uploaded_at = Column(TIMESTAMP, server_default=func.now())
    report = relationship("Report", back_populates="photos")

class Repair(Base):
    __tablename__ = "repairs"
    id = Column(Integer, primary_key=True)
    mechanic_id = Column(Integer, ForeignKey("users.id"))
    repair_types = Column(ARRAY(Text), nullable=False)
    description = Column(Text, nullable=False)
    started_at = Column(TIMESTAMP, nullable=False)
    completed_at = Column(TIMESTAMP)
    result_status = Column(String(20), default="done")
    mechanic_lat = Column(Float)
    mechanic_lng = Column(Float)
    approved_at = Column(TIMESTAMP)
    approved_by = Column(Integer, ForeignKey("users.id"))
    re_dispatch_requested    = Column(Boolean, default=False)
    re_dispatch_requested_at = Column(TIMESTAMP)
    mechanic = relationship("User", foreign_keys=[mechanic_id])
    approver  = relationship("User", foreign_keys=[approved_by])
    report_links = relationship("RepairReport", back_populates="repair", cascade="all, delete-orphan")
    photos = relationship("RepairPhoto", back_populates="repair", cascade="all, delete-orphan")
    cost = relationship("RepairCost", back_populates="repair", uselist=False)

class RepairReport(Base):
    __tablename__ = "repair_reports"
    repair_id = Column(Integer, ForeignKey("repairs.id", ondelete="CASCADE"), primary_key=True)
    report_id = Column(Integer, ForeignKey("reports.id", ondelete="CASCADE"), primary_key=True)
    repair = relationship("Repair", back_populates="report_links")
    report = relationship("Report", back_populates="repair_links")

class RepairPhoto(Base):
    __tablename__ = "repair_photos"
    id = Column(Integer, primary_key=True)
    repair_id = Column(Integer, ForeignKey("repairs.id", ondelete="CASCADE"))
    photo_type = Column(String(10), default="after")
    file_path = Column(String(255), nullable=False)
    uploaded_at = Column(TIMESTAMP, server_default=func.now())
    repair = relationship("Repair", back_populates="photos")

class RepairCost(Base):
    __tablename__ = "repair_costs"
    id = Column(Integer, primary_key=True)
    repair_id = Column(Integer, ForeignKey("repairs.id", ondelete="CASCADE"), unique=True)
    root_cause = Column(Text)
    admin_note = Column(Text)
    cost_party_type = Column(String(50))
    cost_party_manufacturer_id = Column(Integer, ForeignKey("manufacturers.id", ondelete="SET NULL"))
    cost_party_custom = Column(String(200))
    recv_party_type = Column(String(50))
    recv_party_manufacturer_id = Column(Integer, ForeignKey("manufacturers.id", ondelete="SET NULL"))
    recv_party_custom = Column(String(200))
    cost_amount = Column(Integer, default=0)
    cost_status = Column(String(20), default="pending")
    reviewed_by = Column(Integer, ForeignKey("users.id"))
    reviewed_at = Column(TIMESTAMP)
    repair = relationship("Repair", back_populates="cost")
    reviewer = relationship("User", foreign_keys=[reviewed_by])
    cost_manufacturer = relationship("Manufacturer", foreign_keys=[cost_party_manufacturer_id])
    recv_manufacturer = relationship("Manufacturer", foreign_keys=[recv_party_manufacturer_id])

class Improvement(Base):
    __tablename__ = "improvements"
    id = Column(Integer, primary_key=True)
    title = Column(String(200), nullable=False)
    category = Column(String(20), nullable=False)
    description = Column(Text, nullable=False)
    priority = Column(String(10), default="normal")
    part_name = Column(String(100))
    status = Column(String(20), default="registered")
    manufacturer_id = Column(Integer, ForeignKey("manufacturers.id", ondelete="SET NULL"))
    created_by = Column(Integer, ForeignKey("users.id"))
    sw_deploy_target = Column(Date)
    sw_deployed_at = Column(Date)
    manufacturer_memo = Column(Text)
    created_at = Column(TIMESTAMP, server_default=func.now())
    manufacturer = relationship("Manufacturer", foreign_keys=[manufacturer_id])
    creator = relationship("User", foreign_keys=[created_by])
    report_links = relationship("ImprovementReport", back_populates="improvement", cascade="all, delete-orphan")
    attachments = relationship("ImprovementAttachment", back_populates="improvement", cascade="all, delete-orphan")
    logs = relationship("ImprovementLog", back_populates="improvement", cascade="all, delete-orphan")

class ImprovementReport(Base):
    __tablename__ = "improvement_reports"
    improvement_id = Column(Integer, ForeignKey("improvements.id", ondelete="CASCADE"), primary_key=True)
    report_id = Column(Integer, ForeignKey("reports.id", ondelete="CASCADE"), primary_key=True)
    improvement = relationship("Improvement", back_populates="report_links")
    report = relationship("Report")

class ImprovementAttachment(Base):
    __tablename__ = "improvement_attachments"
    id = Column(Integer, primary_key=True)
    improvement_id = Column(Integer, ForeignKey("improvements.id", ondelete="CASCADE"))
    file_path = Column(String(255), nullable=False)
    file_name = Column(String(255))
    uploaded_at = Column(TIMESTAMP, server_default=func.now())
    improvement = relationship("Improvement", back_populates="attachments")

class ImprovementLog(Base):
    __tablename__ = "improvement_logs"
    id = Column(Integer, primary_key=True)
    improvement_id = Column(Integer, ForeignKey("improvements.id", ondelete="CASCADE"))
    changed_by = Column(Integer, ForeignKey("users.id"))
    old_status = Column(String(20))
    new_status = Column(String(20))
    memo = Column(Text)
    changed_at = Column(TIMESTAMP, server_default=func.now())
    improvement = relationship("Improvement", back_populates="logs")
    changer = relationship("User")

class ChargerTypeError(Base):
    __tablename__ = "charger_type_errors"
    id = Column(Integer, primary_key=True)
    charger_type_id = Column(Integer, ForeignKey("charger_types.id", ondelete="CASCADE"), nullable=False)
    error_code = Column(String(20), nullable=False)
    error_name = Column(String(100), nullable=False)
    range_condition = Column(String(200))
    description = Column(Text)
    auto_recovery = Column(Boolean, default=True)
    display_order = Column(Integer, default=0)
    charger_type = relationship("ChargerType", back_populates="errors")

class Manufacturer(Base):
    __tablename__ = "manufacturers"
    id = Column(Integer, primary_key=True)
    name = Column(String(100), nullable=False)
    representative_name = Column(String(100))
    business_number = Column(String(50))
    phone = Column(String(30))
    address = Column(Text)
    is_active = Column(Boolean, default=True)
    created_at = Column(TIMESTAMP, server_default=func.now())

class SystemSetting(Base):
    __tablename__ = "system_settings"
    key = Column(String(100), primary_key=True)
    value = Column(Text, nullable=False)
    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())

class Holiday(Base):
    __tablename__ = "holidays"
    holiday_date = Column(Date, primary_key=True)
    name = Column(String(100), nullable=False)