"""Tests for atomic engagement cadence promotion."""

from __future__ import annotations

from pathlib import Path

import yaml
from click.testing import CliRunner

from kaizen_agentic.cli import cli
from kaizen_agentic.engagement_promote import promote_engagement
from kaizen_agentic.schedule import schedule_path


def _write_cadence(
    repo: Path,
    loop_dir: str,
    loop_id: str,
    phase: str,
    *,
    with_operate_target: bool = True,
) -> None:
    data: dict = {"loop": loop_id, "phase": phase, "regulator_approval": "approved"}
    if phase == "stabilize" and with_operate_target:
        if loop_id == "kaizen-improvement-stack":
            data["operate_target"] = {
                "phase": "operate",
                "chain": {
                    "metrics": "0 8 * * 1",
                    "coach": "0 9 * * 1",
                    "optimization": "0 10 * * 1",
                },
            }
        elif loop_id == "registry-hygiene":
            data["operate_target"] = {
                "phase": "operate",
                "cron": "0 9 * * 1",
                "batch_size": 2,
            }
    path = repo / "loops" / loop_dir / "cadence.yml"
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(yaml.safe_dump(data, sort_keys=False), encoding="utf-8")


def _write_definition(repo: Path, name: str, cron: str, cadence: str) -> None:
    defs_dir = repo / "activity-definitions"
    defs_dir.mkdir(parents=True, exist_ok=True)
    stem = name.removeprefix("daily-")
    content = f"""---
id: coulomb-daily-{stem}
name: Daily test {stem}
enabled: true
trigger:
  type: cron
  cron_expression: "{cron}"
context_sources:
  - type: kaizen
    query: discover_kaizen_scheduled_repos
    params:
      cadence: {cadence}
---

# Daily {stem}
"""
    (repo / "activity-definitions" / name).write_text(content, encoding="utf-8")


def _engagement_fixture(tmp_path: Path) -> Path:
    repo = tmp_path / "coulomb-loop"
    repo.mkdir()
    _write_cadence(repo, "kaizen-stack", "kaizen-improvement-stack", "stabilize")
    _write_cadence(repo, "registry-hygiene", "registry-hygiene", "stabilize")
    _write_definition(repo, "daily-coach-orientation.md", "0 9 * * *", "daily")
    _write_definition(repo, "daily-metrics-optimize.md", "0 8 * * *", "daily")
    _write_definition(repo, "daily-optimization-review.md", "0 10 * * *", "daily")
    _write_definition(repo, "daily-registry-hygiene-sweep.md", "0 7 * * *", "daily")

    roster = {
        "version": "1",
        "loop": "kaizen-improvement-stack",
        "phase": "bootstrap",
        "active": [
            {
                "slug": "pilot-a",
                "root": str(tmp_path / "pilot-a"),
                "agents": ["coach", "optimization"],
            }
        ],
    }
    roster_path = repo / "loops" / "kaizen-stack" / "roster.yaml"
    roster_path.parent.mkdir(parents=True, exist_ok=True)
    roster_path.write_text(yaml.safe_dump(roster, sort_keys=False), encoding="utf-8")
    (tmp_path / "pilot-a").mkdir()
    return repo


class TestEngagementPromote:
    def test_dry_run_lists_all_layers(self, tmp_path: Path) -> None:
        repo = _engagement_fixture(tmp_path)
        result = promote_engagement(
            repo,
            to_phase="operate",
            dry_run=True,
            skip_sync=True,
        )
        layers = {a.layer for a in result.actions}
        assert "cadence" in layers
        assert "definitions" in layers
        assert "fleet" in layers
        assert result.ok

    def test_promote_updates_cadence_and_definitions(self, tmp_path: Path) -> None:
        repo = _engagement_fixture(tmp_path)
        result = promote_engagement(
            repo,
            to_phase="operate",
            skip_fleet=True,
            skip_sync=True,
        )
        assert result.ok
        cadence = yaml.safe_load(
            (repo / "loops" / "kaizen-stack" / "cadence.yml").read_text()
        )
        assert cadence["phase"] == "operate"
        assert "operate_target" not in cadence
        assert (repo / "activity-definitions" / "weekly-coach-orientation.md").is_file()
        assert not (
            repo / "activity-definitions" / "daily-coach-orientation.md"
        ).is_file()

    def test_fleet_only_writes_schedule(self, tmp_path: Path) -> None:
        repo = _engagement_fixture(tmp_path)
        # Pre-promote cadence so fleet-only path applies
        promote_engagement(repo, to_phase="operate", skip_fleet=True, skip_sync=True)
        result = promote_engagement(
            repo,
            to_phase="operate",
            skip_cadence=True,
            skip_definitions=True,
            skip_sync=True,
        )
        sched = schedule_path(tmp_path / "pilot-a")
        assert sched.is_file()
        assert "cadence: weekly" in sched.read_text()

    def test_cli_fleet_only(self, tmp_path: Path) -> None:
        repo = _engagement_fixture(tmp_path)
        runner = CliRunner()
        result = runner.invoke(
            cli,
            [
                "schedule",
                "promote",
                "--engagement-repo",
                str(repo),
                "--fleet-only",
                "--skip-sync",
            ],
        )
        assert result.exit_code == 0, result.output
        assert "[fleet]" in result.output