"""initial schema

Revision ID: 0001_initial
Revises:
Create Date: 2026-05-22 19:00:00
"""

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op


revision: str = "0001_initial"
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "webhook_events",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("delivery_id", sa.String(length=255), nullable=True),
        sa.Column("event_name", sa.String(length=128), nullable=False),
        sa.Column("repo", sa.String(length=255), nullable=False),
        sa.Column("comment_id", sa.Integer(), nullable=True),
        sa.Column("payload_sha256", sa.String(length=64), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("delivery_id", name="uq_webhook_events_delivery_id"),
        sa.UniqueConstraint("repo", "comment_id", name="uq_webhook_events_repo_comment"),
    )

    job_status_enum = sa.Enum("queued", "running", "succeeded", "failed", "skipped", name="jobstatus")
    job_status_enum.create(op.get_bind(), checkfirst=True)

    op.create_table(
        "review_jobs",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("repo", sa.String(length=255), nullable=False),
        sa.Column("pr_number", sa.Integer(), nullable=False),
        sa.Column("head_sha", sa.String(length=64), nullable=False),
        sa.Column("trigger_comment_id", sa.Integer(), nullable=False),
        sa.Column("command", sa.String(length=64), nullable=False),
        sa.Column("command_args", sa.Text(), nullable=True),
        sa.Column("requested_by", sa.String(length=255), nullable=False),
        sa.Column("status", job_status_enum, nullable=False),
        sa.Column("last_error", sa.Text(), nullable=True),
        sa.Column("result_json", sa.JSON(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("repo", "trigger_comment_id", name="uq_review_jobs_repo_trigger_comment"),
    )
    op.create_index("ix_review_jobs_lookup", "review_jobs", ["repo", "pr_number", "head_sha", "status", "created_at"], unique=False)

    run_status_enum = sa.Enum("running", "succeeded", "failed", "skipped", name="runstatus")
    run_status_enum.create(op.get_bind(), checkfirst=True)

    op.create_table(
        "review_runs",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("job_id", sa.Integer(), nullable=False),
        sa.Column("status", run_status_enum, nullable=False),
        sa.Column("runner_container_id", sa.String(length=128), nullable=True),
        sa.Column("result_json", sa.JSON(), nullable=True),
        sa.Column("error_message", sa.Text(), nullable=True),
        sa.Column("started_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.ForeignKeyConstraint(["job_id"], ["review_jobs.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_review_runs_job_status", "review_runs", ["job_id", "status"], unique=False)

    op.create_table(
        "bot_comments",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("repo", sa.String(length=255), nullable=False),
        sa.Column("pr_number", sa.Integer(), nullable=False),
        sa.Column("head_sha", sa.String(length=64), nullable=False),
        sa.Column("gitea_comment_id", sa.Integer(), nullable=False),
        sa.Column("marker", sa.String(length=255), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("repo", "pr_number", "marker", name="uq_bot_comments_marker"),
    )
    op.create_index("ix_bot_comments_repo_pr", "bot_comments", ["repo", "pr_number"], unique=False)


def downgrade() -> None:
    bind = op.get_bind()
    inspector = sa.inspect(bind)

    def has_table(table_name: str) -> bool:
        return table_name in inspector.get_table_names()

    def has_index(table_name: str, index_name: str) -> bool:
        return any(index["name"] == index_name for index in inspector.get_indexes(table_name))

    if has_table("bot_comments"):
        if has_index("bot_comments", "ix_bot_comments_repo_pr"):
            op.drop_index("ix_bot_comments_repo_pr", table_name="bot_comments")
        op.drop_table("bot_comments")

    if has_table("review_runs"):
        if has_index("review_runs", "ix_review_runs_job_status"):
            op.drop_index("ix_review_runs_job_status", table_name="review_runs")
        op.drop_table("review_runs")

    if has_table("review_jobs"):
        if has_index("review_jobs", "ix_review_jobs_lookup"):
            op.drop_index("ix_review_jobs_lookup", table_name="review_jobs")
        op.drop_table("review_jobs")

    if has_table("webhook_events"):
        op.drop_table("webhook_events")

    sa.Enum(name="runstatus").drop(op.get_bind(), checkfirst=True)
    sa.Enum(name="jobstatus").drop(op.get_bind(), checkfirst=True)