"""add pmflow launch tables

Revision ID: 20260425_add_pmflow_launch_tables
Revises: 20260421_finalize_v1_productization
Create Date: 2026-04-25
"""

from __future__ import annotations

from alembic import op
import sqlalchemy as sa

try:
    from sqlalchemy.dialects.postgresql import JSONB
except Exception:  # pragma: no cover
    JSONB = sa.JSON


revision = "20260425_add_pmflow_launch_tables"
down_revision = "20260421_finalize_v1_productization"
branch_labels = None
depends_on = None


def _json_type(bind):
    return JSONB() if bind.dialect.name == "postgresql" else sa.JSON()


def _table_exists(bind, table_name: str) -> bool:
    return sa.inspect(bind).has_table(table_name)


def upgrade() -> None:
    bind = op.get_bind()
    json_type = _json_type(bind)

    if not _table_exists(bind, "pmflow_launch_drafts"):
        op.create_table(
            "pmflow_launch_drafts",
            sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
            sa.Column("tenant_id", sa.BigInteger(), nullable=False),
            sa.Column("created_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("updated_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("user_id", sa.BigInteger(), sa.ForeignKey("users.id"), nullable=False),
            sa.Column("draft_id", sa.String(length=64), nullable=False),
            sa.Column("input_text", sa.Text(), nullable=False),
            sa.Column("input_type", sa.String(length=32), nullable=False, server_default="text"),
            sa.Column("source", sa.String(length=32), nullable=False, server_default="web"),
            sa.Column("attachments", json_type, nullable=False),
            sa.Column("draft_payload", json_type, nullable=False),
            sa.Column("edited_payload", json_type, nullable=True),
            sa.Column("status", sa.String(length=32), nullable=False, server_default="draft"),
            sa.Column("confidence", sa.Float(), nullable=True),
            sa.Column("warnings", json_type, nullable=False),
            sa.Column("confirmed_project_id", sa.BigInteger(), sa.ForeignKey("projects.id"), nullable=True),
            sa.Column("expires_at", sa.TIMESTAMP(), nullable=False),
            sa.Column("confirmed_at", sa.TIMESTAMP(), nullable=True),
            sa.Column("confirm_request_hash", sa.String(length=128), nullable=True),
            sa.UniqueConstraint("tenant_id", "draft_id", name="uq_pmflow_launch_drafts_tenant_draft_id"),
        )
        op.create_index("ix_pmflow_launch_drafts_tenant_id", "pmflow_launch_drafts", ["tenant_id"], unique=False)
        op.create_index("ix_pmflow_launch_drafts_user_id", "pmflow_launch_drafts", ["user_id"], unique=False)
        op.create_index("ix_pmflow_launch_drafts_draft_id", "pmflow_launch_drafts", ["draft_id"], unique=False)
        op.create_index("ix_pmflow_launch_drafts_status", "pmflow_launch_drafts", ["status"], unique=False)
        op.create_index(
            "ix_pmflow_launch_drafts_confirmed_project_id",
            "pmflow_launch_drafts",
            ["confirmed_project_id"],
            unique=False,
        )
        op.create_index("ix_pmflow_launch_drafts_expires_at", "pmflow_launch_drafts", ["expires_at"], unique=False)

    if not _table_exists(bind, "pmflow_threads"):
        op.create_table(
            "pmflow_threads",
            sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
            sa.Column("tenant_id", sa.BigInteger(), nullable=False),
            sa.Column("created_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("updated_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("project_id", sa.BigInteger(), sa.ForeignKey("projects.id"), nullable=False),
            sa.Column("launch_draft_id", sa.BigInteger(), sa.ForeignKey("pmflow_launch_drafts.id"), nullable=True),
            sa.Column("title", sa.String(length=255), nullable=False),
            sa.Column("objective", sa.Text(), nullable=False),
            sa.Column("status", sa.String(length=32), nullable=False, server_default="active"),
            sa.Column("source", sa.String(length=32), nullable=False, server_default="project_launch"),
            sa.UniqueConstraint("tenant_id", "project_id", "source", name="uq_pmflow_threads_tenant_project_source"),
        )
        op.create_index("ix_pmflow_threads_tenant_id", "pmflow_threads", ["tenant_id"], unique=False)
        op.create_index("ix_pmflow_threads_project_id", "pmflow_threads", ["project_id"], unique=False)
        op.create_index("ix_pmflow_threads_launch_draft_id", "pmflow_threads", ["launch_draft_id"], unique=False)
        op.create_index("ix_pmflow_threads_status", "pmflow_threads", ["status"], unique=False)
        op.create_index("ix_pmflow_threads_source", "pmflow_threads", ["source"], unique=False)

    if not _table_exists(bind, "pmflow_thread_messages"):
        op.create_table(
            "pmflow_thread_messages",
            sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
            sa.Column("tenant_id", sa.BigInteger(), nullable=False),
            sa.Column("created_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("updated_at", sa.TIMESTAMP(), server_default=sa.func.now(), nullable=False),
            sa.Column("thread_id", sa.BigInteger(), sa.ForeignKey("pmflow_threads.id"), nullable=False),
            sa.Column("project_id", sa.BigInteger(), sa.ForeignKey("projects.id"), nullable=False),
            sa.Column("launch_draft_id", sa.BigInteger(), sa.ForeignKey("pmflow_launch_drafts.id"), nullable=True),
            sa.Column("role", sa.String(length=32), nullable=False),
            sa.Column("content", sa.Text(), nullable=False),
            sa.Column("source", sa.String(length=32), nullable=False, server_default="project_launch"),
            sa.Column("attachments", json_type, nullable=False),
            sa.Column("message_metadata", json_type, nullable=False),
            sa.Column("status", sa.String(length=32), nullable=False, server_default="sent"),
        )
        op.create_index("ix_pmflow_thread_messages_tenant_id", "pmflow_thread_messages", ["tenant_id"], unique=False)
        op.create_index("ix_pmflow_thread_messages_thread_id", "pmflow_thread_messages", ["thread_id"], unique=False)
        op.create_index("ix_pmflow_thread_messages_project_id", "pmflow_thread_messages", ["project_id"], unique=False)
        op.create_index(
            "ix_pmflow_thread_messages_launch_draft_id",
            "pmflow_thread_messages",
            ["launch_draft_id"],
            unique=False,
        )
        op.create_index("ix_pmflow_thread_messages_status", "pmflow_thread_messages", ["status"], unique=False)


def downgrade() -> None:
    bind = op.get_bind()
    for index_name, table_name in (
        ("ix_pmflow_thread_messages_status", "pmflow_thread_messages"),
        ("ix_pmflow_thread_messages_launch_draft_id", "pmflow_thread_messages"),
        ("ix_pmflow_thread_messages_project_id", "pmflow_thread_messages"),
        ("ix_pmflow_thread_messages_thread_id", "pmflow_thread_messages"),
        ("ix_pmflow_thread_messages_tenant_id", "pmflow_thread_messages"),
        ("ix_pmflow_threads_source", "pmflow_threads"),
        ("ix_pmflow_threads_status", "pmflow_threads"),
        ("ix_pmflow_threads_launch_draft_id", "pmflow_threads"),
        ("ix_pmflow_threads_project_id", "pmflow_threads"),
        ("ix_pmflow_threads_tenant_id", "pmflow_threads"),
        ("ix_pmflow_launch_drafts_expires_at", "pmflow_launch_drafts"),
        ("ix_pmflow_launch_drafts_confirmed_project_id", "pmflow_launch_drafts"),
        ("ix_pmflow_launch_drafts_status", "pmflow_launch_drafts"),
        ("ix_pmflow_launch_drafts_draft_id", "pmflow_launch_drafts"),
        ("ix_pmflow_launch_drafts_user_id", "pmflow_launch_drafts"),
        ("ix_pmflow_launch_drafts_tenant_id", "pmflow_launch_drafts"),
    ):
        if _table_exists(bind, table_name):
            try:
                op.drop_index(index_name, table_name=table_name)
            except Exception:
                pass
    for table_name in ("pmflow_thread_messages", "pmflow_threads", "pmflow_launch_drafts"):
        if _table_exists(bind, table_name):
            op.drop_table(table_name)