from datetime import date, datetime

from sqlalchemy import Date, DateTime, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


class ProjectCourse(Base):
    __tablename__ = "project_courses"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    code: Mapped[str] = mapped_column(String(16), unique=True, index=True)
    name: Mapped[str] = mapped_column(String(128))
    default_certificate_name: Mapped[str] = mapped_column(String(128), default="培训结业证书")
    default_course_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
    default_stage_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
    default_issuer_name: Mapped[str] = mapped_column(String(128), default="本公司")
    status: Mapped[str] = mapped_column(String(32), default="active")
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)


class Certificate(Base):
    __tablename__ = "certificates"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    learner_id: Mapped[int] = mapped_column(index=True)
    project_code: Mapped[str] = mapped_column(String(16), index=True)
    certificate_no: Mapped[str] = mapped_column(String(64), unique=True, index=True)
    certificate_name: Mapped[str] = mapped_column(String(128))
    class_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
    course_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
    stage_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
    issue_date: Mapped[date] = mapped_column(Date)
    issuer_name: Mapped[str] = mapped_column(String(128))
    status: Mapped[str] = mapped_column(String(32), default="valid")
    pdf_status: Mapped[str] = mapped_column(String(32), default="not_generated")
    pdf_file_path: Mapped[str | None] = mapped_column(String(512), nullable=True)
    pdf_last_accessed_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    public_token_id: Mapped[int | None] = mapped_column(nullable=True)
    qr_token_id: Mapped[int | None] = mapped_column(nullable=True)
    remark: Mapped[str | None] = mapped_column(Text, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)


class CertificateAccessToken(Base):
    __tablename__ = "certificate_access_tokens"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    certificate_id: Mapped[int] = mapped_column(index=True)
    token_hash: Mapped[str] = mapped_column(String(128), unique=True, index=True)
    token_value: Mapped[str] = mapped_column(String(128), unique=True, index=True)
    token_type: Mapped[str] = mapped_column(String(32))
    status: Mapped[str] = mapped_column(String(32), default="active")
    created_reason: Mapped[str] = mapped_column(String(128), default="initial")
    revoked_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    last_access_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)