"""Prometheus scrape targets are rows edited on the Prometheus page

Each row is a /metrics endpoint: where it is, its bearer token (encrypted),
how often to scrape it, which series to keep, and the newest scrape's
outcome (milestone 506).

Revision ID: prometheus_001_targets
Revises: (none — a branch off core via depends_on)
Create Date: 2026-10-12
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "prometheus_001_targets"
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = "prometheus"
depends_on: Union[str, Sequence[str], None] = ("0004_app_settings",)


def upgrade() -> None:
    op.create_table(
        "prometheus_targets",
        sa.Column("id", sa.String(36), primary_key=True),
        sa.Column("name", sa.String(100), nullable=False, unique=True),
        sa.Column("url", sa.String(500), nullable=False),
        sa.Column("token", sa.Text, nullable=False, server_default=""),
        sa.Column("verify_tls", sa.Boolean, nullable=False, server_default=sa.true()),
        sa.Column("interval_seconds", sa.Integer, nullable=False, server_default="60"),
        sa.Column("keep", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("drop", sa.JSON, nullable=False, server_default="[]"),
        sa.Column("series_cap", sa.Integer, nullable=False, server_default="1000"),
        sa.Column("enabled", sa.Boolean, nullable=False, server_default=sa.true()),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("last_scraped_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("last_ok_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("last_error", sa.Text, nullable=True),
        sa.Column("last_kept", sa.Integer, nullable=False, server_default="0"),
        sa.Column("last_dropped", sa.Integer, nullable=False, server_default="0"),
        sa.Column("last_capped", sa.Integer, nullable=False, server_default="0"),
    )


def downgrade() -> None:
    op.drop_table("prometheus_targets")