from datetime import datetime, timezone

from sqlalchemy import Boolean, Column, DateTime, Float, Integer, String, Text, UniqueConstraint, create_engine
from sqlalchemy.orm import declarative_base

Base = declarative_base()


class UserModel(Base):
    __tablename__ = "users"

    id = Column(String(36), primary_key=True)
    email = Column(String(255), nullable=False, unique=True, index=True)
    username = Column(String(100), nullable=True, unique=True, index=True)
    display_name = Column(String(255), nullable=False)
    password_hash = Column(String(255), nullable=False)
    email_verified = Column(Boolean, nullable=False, default=False)
    email_verification_token = Column(String(255), nullable=True)
    password_reset_token = Column(String(255), nullable=True)
    password_reset_expires_at = Column(DateTime, nullable=True)
    last_login_at = Column(DateTime, nullable=True)
    last_login_ip = Column(String(50), nullable=True)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class WorkspaceModel(Base):
    __tablename__ = "workspaces"

    id = Column(String(36), primary_key=True)
    name = Column(String(100), nullable=False)
    owner_user_id = Column(String(36), nullable=False, index=True)
    subscription_plan = Column(String(20), nullable=False, default="free")
    subscription_status = Column(String(20), nullable=False, default="active")
    subscription_expires_at = Column(DateTime, nullable=True)
    max_projects = Column(Float, nullable=False, default=3)
    max_storage_gb = Column(Float, nullable=False, default=10)
    used_storage_gb = Column(Float, nullable=False, default=0.0)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class WorkspaceMemberModel(Base):
    __tablename__ = "workspace_members"
    __table_args__ = (UniqueConstraint("workspace_id", "user_id", name="uq_workspace_members_workspace_user"),)

    id = Column(String(36), primary_key=True)
    workspace_id = Column(String(36), nullable=False, index=True)
    user_id = Column(String(36), nullable=False, index=True)
    role = Column(String(20), nullable=False)
    invited_by = Column(String(36), nullable=True)
    joined_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class WorkspaceInvitationModel(Base):
    __tablename__ = "workspace_invitations"

    id = Column(String(36), primary_key=True)
    workspace_id = Column(String(36), nullable=False, index=True)
    inviter_user_id = Column(String(36), nullable=False)
    invitee_email = Column(String(255), nullable=False, index=True)
    role = Column(String(20), nullable=False)
    invitation_token = Column(String(255), nullable=False, unique=True, index=True)
    status = Column(String(20), nullable=False, default="pending", index=True)
    expires_at = Column(DateTime, nullable=True)
    accepted_at = Column(DateTime, nullable=True)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class ProjectModel(Base):
    __tablename__ = "projects"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    name = Column(String(100), nullable=False)
    description = Column(Text, nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class AssetLibraryModel(Base):
    __tablename__ = "asset_libraries"

    id = Column(String(36), primary_key=True)
    workspace_id = Column(String(36), nullable=False, index=True)
    project_id = Column(String(36), nullable=True, index=True)
    name = Column(String(255), nullable=False)
    kind = Column(String(20), nullable=False, index=True)
    asset_count = Column(Float, nullable=False, default=0)
    total_size = Column(Float, nullable=False, default=0)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class AssetModel(Base):
    __tablename__ = "assets"

    id = Column(String(36), primary_key=True)
    workspace_id = Column(String(36), nullable=False, index=True)
    project_id = Column(String(36), nullable=False, index=True)
    asset_library_id = Column(String(36), nullable=False, index=True)
    name = Column(String(500), nullable=False)
    file_type = Column(String(20), nullable=False, index=True)
    file_size = Column(Float, nullable=False)
    file_url = Column(String(1000), nullable=False)
    thumbnail_url = Column(String(1000), nullable=True)
    duration = Column(Float, nullable=True)
    width = Column(Float, nullable=True)
    height = Column(Float, nullable=True)
    fps = Column(Float, nullable=True)
    codec = Column(String(50), nullable=True)
    status = Column(String(20), nullable=False, default="uploading", index=True)
    classification_status = Column(String(20), nullable=False, default="pending", index=True)
    classification_result = Column(Text, nullable=True)
    quality_score = Column(Float, nullable=True)
    uploaded_by_user_id = Column(String(36), nullable=False)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc), index=True)
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class ProjectTitleModel(Base):
    __tablename__ = "project_titles"

    id = Column(String(36), primary_key=True)
    workspace_id = Column(String(36), nullable=False, index=True)
    project_id = Column(String(36), nullable=False, index=True)
    text = Column(String(200), nullable=False)
    category = Column(String(50), nullable=False, default="default", index=True)
    favorite = Column(Boolean, nullable=False, default=False, index=True)
    usage_count = Column(Integer, nullable=False, default=0)
    is_active = Column(Boolean, nullable=False, default=True)
    created_by_user_id = Column(String(36), nullable=False)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class EditTemplateModel(Base):
    __tablename__ = "edit_templates"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    name = Column(String(120), nullable=False)
    description = Column(Text, nullable=False, default="")
    target_duration = Column(Float, nullable=False, default=30)
    clip_count = Column(Integer, nullable=False, default=3)
    is_active = Column(Boolean, nullable=False, default=True)
    created_by_user_id = Column(String(32), nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class EditPlanModel(Base):
    __tablename__ = "edit_plans"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    template_id = Column(String(32), nullable=False, index=True)
    asset_library_id = Column(String(32), nullable=False, index=True)
    title_id = Column(String(32), nullable=False, default="")
    status = Column(String(20), nullable=False, default="draft", index=True)
    summary = Column(Text, nullable=False, default="")
    created_by_user_id = Column(String(32), nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class EditPlanClipModel(Base):
    __tablename__ = "edit_plan_clips"

    id = Column(String(32), primary_key=True)
    edit_plan_id = Column(String(32), nullable=False, index=True)
    asset_id = Column(String(32), nullable=False, index=True)
    sequence = Column(Integer, nullable=False)
    start_time = Column(Float, nullable=False, default=0)
    duration = Column(Float, nullable=False, default=0)
    reason = Column(Text, nullable=False, default="")


class IngestJobModel(Base):
    __tablename__ = "ingest_jobs"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    library_id = Column(String(32), nullable=False, index=True)
    storage_key = Column(String(255), nullable=False)
    status = Column(String(20), nullable=False, default="pending")
    error_message = Column(Text, nullable=False, default="")
    result_asset_id = Column(String(32), nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class ClassificationJobModel(Base):
    __tablename__ = "classification_jobs"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    asset_id = Column(String(32), nullable=False, index=True)
    status = Column(String(20), nullable=False, default="pending")
    classification = Column(String(50), nullable=False, default="")
    confidence = Column(Float, nullable=False, default=0.0)
    error_message = Column(Text, nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class GenerationTaskModel(Base):
    __tablename__ = "generation_tasks"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    strategy_id = Column(String(32), nullable=False, default="")
    asset_library_id = Column(String(32), nullable=False, index=True)
    voice_library_id = Column(String(32), nullable=False, default="")
    edit_plan_id = Column(String(32), nullable=False, default="", index=True)
    status = Column(String(20), nullable=False, default="pending", index=True)
    progress = Column(Float, nullable=False, default=0.0)
    result_count = Column(Float, nullable=False, default=0)
    error_message = Column(Text, nullable=False, default="")
    started_at = Column(DateTime, nullable=True)
    completed_at = Column(DateTime, nullable=True)
    created_by_user_id = Column(String(32), nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class GeneratedVideoModel(Base):
    __tablename__ = "generated_videos"

    id = Column(String(32), primary_key=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    generation_task_id = Column(String(32), nullable=False, index=True)
    name = Column(String(255), nullable=False)
    file_url = Column(String(1000), nullable=False)
    file_size = Column(Float, nullable=False)
    duration = Column(Float, nullable=False)
    thumbnail_url = Column(String(1000), nullable=True)
    width = Column(Float, nullable=False)
    height = Column(Float, nullable=False)
    fps = Column(Float, nullable=False)
    status = Column(String(20), nullable=False, default="completed", index=True)
    review_status = Column(String(20), nullable=False, default="pending_review", index=True)
    generation_params = Column(Text, nullable=False, default="{}")
    generated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=True)


class TaskModel(Base):
    __tablename__ = "tasks"

    id = Column(String(32), primary_key=True)
    project_id = Column(String(32), nullable=False, index=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    name = Column(String(200), nullable=False)
    description = Column(Text, nullable=False, default="")
    status = Column(String(20), nullable=False, default="pending", index=True)
    priority = Column(String(20), nullable=False, default="medium")
    parent_task_id = Column(String(32), nullable=False, default="", index=True)
    assignee_user_id = Column(String(32), nullable=False, default="")
    progress = Column(Float, nullable=False, default=0.0)
    planned_start_date = Column(DateTime, nullable=True)
    planned_end_date = Column(DateTime, nullable=True)
    actual_start_date = Column(DateTime, nullable=True)
    actual_end_date = Column(DateTime, nullable=True)
    tags_json = Column(Text, nullable=False, default="[]")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class MilestoneModel(Base):
    __tablename__ = "milestones"

    id = Column(String(32), primary_key=True)
    project_id = Column(String(32), nullable=False, index=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    name = Column(String(200), nullable=False)
    description = Column(Text, nullable=False, default="")
    target_date = Column(DateTime, nullable=True)
    completed = Column(Boolean, nullable=False, default=False)
    completed_at = Column(DateTime, nullable=True)
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))


class TaskIssueModel(Base):
    __tablename__ = "task_issues"

    id = Column(String(32), primary_key=True)
    task_id = Column(String(32), nullable=False, index=True)
    project_id = Column(String(32), nullable=False, index=True)
    workspace_id = Column(String(32), nullable=False, index=True)
    title = Column(String(200), nullable=False)
    description = Column(Text, nullable=False, default="")
    resolved = Column(Boolean, nullable=False, default=False)
    resolved_at = Column(DateTime, nullable=True)
    created_by_user_id = Column(String(32), nullable=False, default="")
    created_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))
    updated_at = Column(DateTime, nullable=False, default=lambda: datetime.now(timezone.utc))