"""Add the independent shared-library collaboration module.

Revision ID: 20260714_01
Revises: 20260713_02
"""

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import postgresql


revision = "20260714_01"
down_revision = "20260713_02"
branch_labels = None
depends_on = None


def upgrade() -> None:
    uuid_type = postgresql.UUID(as_uuid=True)
    op.create_table(
        "collaboration_folders",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("study_id", uuid_type, sa.ForeignKey("studies.id"), nullable=False),
        sa.Column("parent_id", uuid_type, sa.ForeignKey("collaboration_folders.id", ondelete="SET NULL")),
        sa.Column("name", sa.String(120), nullable=False),
        sa.Column("sort_order", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("created_by", uuid_type, sa.ForeignKey("users.id"), nullable=False),
        sa.Column("deleted_at", sa.DateTime(timezone=True)),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
    )
    op.create_index("ix_collaboration_folders_study_parent", "collaboration_folders", ["study_id", "parent_id"])

    op.create_table(
        "collaboration_files",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("study_id", uuid_type, sa.ForeignKey("studies.id"), nullable=False),
        sa.Column("folder_id", uuid_type, sa.ForeignKey("collaboration_folders.id", ondelete="SET NULL")),
        sa.Column("title", sa.String(255), nullable=False),
        sa.Column("file_type", sa.String(16), nullable=False),
        sa.Column("extension", sa.String(16), nullable=False),
        sa.Column("status", sa.String(20), nullable=False, server_default="ACTIVE"),
        sa.Column("owner_id", uuid_type, sa.ForeignKey("users.id"), nullable=False),
        sa.Column("current_revision_id", uuid_type),
        sa.Column("generation", sa.Integer(), nullable=False, server_default="1"),
        sa.Column("deleted_at", sa.DateTime(timezone=True)),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
    )
    op.create_index("ix_collaboration_files_study_folder", "collaboration_files", ["study_id", "folder_id"])
    op.create_index("ix_collaboration_files_study_status", "collaboration_files", ["study_id", "status"])

    op.create_table(
        "collaboration_members",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("file_id", uuid_type, sa.ForeignKey("collaboration_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("user_id", uuid_type, sa.ForeignKey("users.id"), nullable=False),
        sa.Column("role", sa.String(16), nullable=False),
        sa.Column("invited_by", uuid_type, sa.ForeignKey("users.id"), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("file_id", "user_id", name="uq_collaboration_member_file_user"),
    )
    op.create_index("ix_collaboration_members_user", "collaboration_members", ["user_id"])

    op.create_table(
        "collaboration_revisions",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("file_id", uuid_type, sa.ForeignKey("collaboration_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("revision_no", sa.Integer(), nullable=False),
        sa.Column("parent_revision_id", uuid_type, sa.ForeignKey("collaboration_revisions.id", ondelete="SET NULL")),
        sa.Column("file_uri", sa.String(500), nullable=False),
        sa.Column("original_filename", sa.String(255), nullable=False),
        sa.Column("file_hash", sa.String(128), nullable=False),
        sa.Column("file_size", sa.BigInteger(), nullable=False),
        sa.Column("mime_type", sa.String(100), nullable=False),
        sa.Column("source", sa.String(24), nullable=False),
        sa.Column("change_summary", sa.Text()),
        sa.Column("created_by", uuid_type, sa.ForeignKey("users.id")),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("file_id", "revision_no", name="uq_collaboration_revision_file_no"),
    )
    op.create_index("ix_collaboration_revisions_file_created", "collaboration_revisions", ["file_id", "created_at"])
    op.create_foreign_key(
        "fk_collaboration_files_current_revision",
        "collaboration_files",
        "collaboration_revisions",
        ["current_revision_id"],
        ["id"],
        ondelete="SET NULL",
    )

    op.create_table(
        "collaboration_sessions",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("file_id", uuid_type, sa.ForeignKey("collaboration_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("base_revision_id", uuid_type, sa.ForeignKey("collaboration_revisions.id"), nullable=False),
        sa.Column("document_key", sa.String(128), nullable=False),
        sa.Column("generation", sa.Integer(), nullable=False),
        sa.Column("status", sa.String(20), nullable=False, server_default="ACTIVE"),
        sa.Column("started_by", uuid_type, sa.ForeignKey("users.id"), nullable=False),
        sa.Column("active_users", sa.Text()),
        sa.Column("last_callback_at", sa.DateTime(timezone=True)),
        sa.Column("closed_at", sa.DateTime(timezone=True)),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("document_key", name="uq_collaboration_session_document_key"),
    )
    op.create_index("ix_collaboration_sessions_file_status", "collaboration_sessions", ["file_id", "status"])

    op.create_table(
        "collaboration_callback_receipts",
        sa.Column("id", uuid_type, primary_key=True),
        sa.Column("session_id", uuid_type, sa.ForeignKey("collaboration_sessions.id", ondelete="CASCADE"), nullable=False),
        sa.Column("fingerprint", sa.String(128), nullable=False),
        sa.Column("callback_status", sa.Integer(), nullable=False),
        sa.Column("result", sa.String(24), nullable=False),
        sa.Column("revision_id", uuid_type, sa.ForeignKey("collaboration_revisions.id", ondelete="SET NULL")),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
        sa.UniqueConstraint("session_id", "fingerprint", name="uq_collaboration_callback_session_fingerprint"),
    )


def downgrade() -> None:
    op.drop_table("collaboration_callback_receipts")
    op.drop_index("ix_collaboration_sessions_file_status", table_name="collaboration_sessions")
    op.drop_table("collaboration_sessions")
    op.drop_constraint("fk_collaboration_files_current_revision", "collaboration_files", type_="foreignkey")
    op.drop_index("ix_collaboration_revisions_file_created", table_name="collaboration_revisions")
    op.drop_table("collaboration_revisions")
    op.drop_index("ix_collaboration_members_user", table_name="collaboration_members")
    op.drop_table("collaboration_members")
    op.drop_index("ix_collaboration_files_study_status", table_name="collaboration_files")
    op.drop_index("ix_collaboration_files_study_folder", table_name="collaboration_files")
    op.drop_table("collaboration_files")
    op.drop_index("ix_collaboration_folders_study_parent", table_name="collaboration_folders")
    op.drop_table("collaboration_folders")