"""Contracts for automatic deployment of validated Hermes image releases."""

from __future__ import annotations

from pathlib import Path

import yaml


ROOT = Path(__file__).resolve().parents[2]
SERVICE = ROOT / "services/hermes"
APPLICATIONS = ROOT / "clusters/atlas/flux-system/applications"


def test_image_policies_observe_only_validated_release_tags() -> None:
    """Candidates remain invisible until Jenkins publishes the release suffix."""
    documents = list(
        yaml.safe_load_all((SERVICE / "image.yaml").read_text(encoding="utf-8"))
    )
    repositories = {
        item["metadata"]["name"]: item
        for item in documents
        if item["kind"] == "ImageRepository"
    }
    policies = {
        item["metadata"]["name"]: item
        for item in documents
        if item["kind"] == "ImagePolicy"
    }
    assert set(repositories) == {
        "hermes-agent-release",
        "hermes-webui-release",
        "hermes-stt-release",
        "hermes-tts-release",
    }
    assert set(policies) == set(repositories)
    for name, policy in policies.items():
        assert policy["metadata"]["namespace"] == "hermes"
        assert policy["spec"]["imageRepositoryRef"]["name"] == name
        assert policy["spec"]["filterTags"] == {
            "pattern": ("^git-[0-9a-f]{40}-build-" "(?P<build>[1-9][0-9]*)-release$"),
            "extract": "$build",
        }
        assert policy["spec"]["policy"] == {"numerical": {"order": "asc"}}
        assert policy["spec"]["digestReflectionPolicy"] == "Always"


def test_flux_updates_only_the_reviewed_hermes_image_digests() -> None:
    """Flux persists selected digests to Git and rolls all matching workloads."""
    service_kustomization = (SERVICE / "kustomization.yaml").read_text(encoding="utf-8")
    applications_kustomization = (APPLICATIONS / "kustomization.yaml").read_text(
        encoding="utf-8"
    )
    automation = yaml.safe_load(
        (APPLICATIONS / "hermes/image-automation.yaml").read_text(encoding="utf-8")
    )
    agent = (SERVICE / "kustomization.yaml").read_text(encoding="utf-8")
    chat = (SERVICE / "chat-statefulset.yaml").read_text(encoding="utf-8")
    dashboard = (SERVICE / "deployment.yaml").read_text(encoding="utf-8")
    voice = (SERVICE / "voice-deployment.yaml").read_text(encoding="utf-8")

    assert "  - image.yaml" in service_kustomization
    assert "  - hermes/image-automation.yaml" in applications_kustomization
    assert automation["spec"]["git"]["checkout"]["ref"]["branch"] == "main"
    assert automation["spec"]["git"]["push"]["branch"] == "main"
    assert automation["spec"]["update"] == {
        "strategy": "Setters",
        "path": "services/hermes",
    }
    assert agent.count('"$imagepolicy": "hermes:hermes-agent-release:digest"') == 1
    webui_marker = '"$imagepolicy": "hermes:hermes-webui-release"'
    assert chat.count(webui_marker) == 1
    assert dashboard.count(webui_marker) == 1
    # A digest-only setter replaces the complete YAML scalar with ``sha256:...``.
    # Whole-image setters must retain the registry and repository in pod specs.
    for workload in (chat, dashboard):
        marked_line = next(
            line for line in workload.splitlines() if webui_marker in line
        )
        assert "registry.bstein.dev/bstein/hermes-webui:" in marked_line
        assert "@sha256:" in marked_line
    for component in ("stt", "tts"):
        marker = f'"$imagepolicy": "hermes:hermes-{component}-release"'
        assert voice.count(marker) == 1
        marked_line = next(line for line in voice.splitlines() if marker in line)
        assert f"registry.bstein.dev/bstein/hermes-jetson-{component}" in marked_line
        assert "@sha256:" in marked_line