from __future__ import annotations

import re
from typing import Any

SOURCE_REPOSITORY = "jens/unraid-appops-gateway"
HELPER_NAME = "itworx-controller-artifact-promoter-modern"
CONTROLLER_VERSION = "2.1.14"
HELPER_LABEL = "itworx.controller.promoter"
_REVISION = re.compile(r"^[0-9a-f]{40}$")
_IMAGE_ID = re.compile(r"^sha256:[0-9a-f]{64}$")
_CONTAINER_ID = re.compile(r"^[0-9a-f]{64}$")
_VERSION = re.compile(r"^[0-9]+\.[0-9]+\.[0-9]+(?:[-+][0-9A-Za-z.-]+)?$")


def helper_container_spec(
    *,
    revision: str,
    image_id: str,
    current_controller_id: str | None = None,
    current_controller_revision: str | None = None,
    current_controller_tree: str | None = None,
    current_controller_version: str | None = None,
) -> dict[str, Any]:
    if not _REVISION.fullmatch(revision):
        raise ValueError("controller_promoter_revision_invalid")
    if not _IMAGE_ID.fullmatch(image_id):
        raise ValueError("controller_promoter_image_invalid")

    bootstrap_values = (
        current_controller_id,
        current_controller_revision,
        current_controller_tree,
        current_controller_version,
    )
    if any(value is not None for value in bootstrap_values):
        if (
            not _CONTAINER_ID.fullmatch(current_controller_id or "")
            or not _REVISION.fullmatch(current_controller_revision or "")
            or not _REVISION.fullmatch(current_controller_tree or "")
            or not _VERSION.fullmatch(current_controller_version or "")
        ):
            raise ValueError("controller_promoter_bootstrap_binding_invalid")

    command = f"""set -Eeuo pipefail
umask 077
revision='{revision}'
version='{CONTROLLER_VERSION}'
image_id='{image_id}'
repo='/gitea-repositories/jens/unraid-appops-gateway.git'
[[ \"$(stat -c '%a:%u:%g' /tmp)\" == '1777:0:0' ]]
work=\"$(mktemp -d -p /tmp itworx-controller-artifact-promoter-{revision[:12]}.XXXXXX)\"
[[ -d \"$work\" && ! -L \"$work\" && \"$(stat -c '%u:%a' \"$work\")\" == '0:700' ]]
cleanup() {{ rm -rf -- \"$work\"; }}
trap cleanup EXIT
command -v git >/dev/null
command -v docker >/dev/null
docker compose version >/dev/null
command -v python3 >/dev/null
command -v tar >/dev/null
command -v curl >/dev/null
git --git-dir=\"$repo\" cat-file -e \"$revision^{{commit}}\"
tree=\"$(git --git-dir=\"$repo\" rev-parse \"$revision^{{tree}}\")\"
git --git-dir=\"$repo\" archive --format=tar \"$revision\" \\
  ops/gitea-deploy-broker \\
  scripts/prepare_controller_artifact.py \\
  scripts/reconcile_controller_state.py \\
  scripts/prepare_controller_hub_release_volume.py \\
  scripts/vendor \\
  scripts/run_repopulse_adoption.py \
  scripts/upgrade_deployment_controller.sh > \"$work/controller.tar\"
chmod 0600 \"$work/controller.tar\"
archive_sha=\"$(sha256sum \"$work/controller.tar\" | cut -d ' ' -f 1)\"
git --git-dir=\"$repo\" show \"$revision:scripts/upgrade_deployment_controller.sh\" > \"$work/upgrade.sh\"
chmod 0700 \"$work/upgrade.sh\"
bash \"$work/upgrade.sh\" \\
  --archive \"$work/controller.tar\" \\
  --archive-sha256 \"$archive_sha\" \\
  --source-repository '{SOURCE_REPOSITORY}' \\
  --source-revision \"$revision\" \\
  --source-tree \"$tree\" \\
  --controller-version \"$version\" \\
  --image-id \"$image_id\" \\
  --confirm UPGRADE_DEPLOYMENT_CONTROLLER_V2
"""

    labels = {
        HELPER_LABEL: "true",
        "itworx.source.repository": SOURCE_REPOSITORY,
        "itworx.source.revision": revision,
        "itworx.controller.version": CONTROLLER_VERSION,
    }
    if current_controller_id is not None:
        labels.update(
            {
                "itworx.controller.bootstrap.target.id": current_controller_id,
                "itworx.controller.bootstrap.target.image": image_id,
                "itworx.controller.bootstrap.target.revision": current_controller_revision or "",
                "itworx.controller.bootstrap.target.tree": current_controller_tree or "",
                "itworx.controller.bootstrap.target.version": current_controller_version or "",
            }
        )

    return {
        "Image": image_id,
        "User": "0:0",
        "Cmd": ["/bin/bash", "-lc", command],
        "Labels": labels,
        "HostConfig": {
            "Binds": [
                "/mnt/cache:/mnt/cache",
                "/mnt/user:/mnt/user",
                "/var/lib/docker:/var/lib/docker:ro",
                "/srv/example/appdata/gitea/git/repositories:/gitea-repositories:ro",
                "/var/run/docker.sock:/var/run/docker.sock",
            ],
            "NetworkMode": "host",
            "Privileged": False,
            "ReadonlyRootfs": True,
            "CpuPeriod": 100000,
            "CpuQuota": 100000,
            "Memory": 1024 * 1024 * 1024,
            "PidsLimit": 128,
            "Tmpfs": {"/tmp": "rw,nosuid,nodev,size=268435456,mode=1777"},
            "SecurityOpt": ["no-new-privileges:true"],
            "RestartPolicy": {"Name": "no"},
        },
    }