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import urllib.parse
import dataclasses

S3_HOST = 's3.lix.systems'
S3_ENDPOINT = 'https://s3.lix.systems'

DEFAULT_STORE_URI_BITS = {
    'region': 'garage',
    'endpoint': 's3.lix.systems',
    'want-mass-query': 'true',
    'write-nar-listing': 'true',
    'ls-compression': 'zstd',
    'narinfo-compression': 'zstd',
    'compression': 'zstd',
    'parallel-compression': 'true',
}


@dataclasses.dataclass
class DockerTarget:
    registry_path: str
    """Registry path without the tag, e.g. ghcr.io/lix-project/lix"""

    tags: list[str]
    """List of tags this image should take. There must be at least one."""

    @staticmethod
    def resolve(item: str, version: str, major: str) -> str:
        """
        Applies templates:
        - version: the Lix version e.g. 2.90.0
        - major: the major Lix version e.g. 2.90
        """
        return item.format(version=version, major=major)

    def registry_name(self) -> str:
        [a, _, _] = self.registry_path.partition('/')
        return a


@dataclasses.dataclass
class RelengEnvironment:
    name: str

    cache_store_overlay: dict[str, str]
    cache_bucket: str
    releases_bucket: str
    docs_bucket: str
    git_repo: str

    docker_targets: list[DockerTarget]

    def cache_store_uri(self):
        qs = DEFAULT_STORE_URI_BITS.copy()
        qs.update(self.cache_store_overlay)
        return self.cache_bucket + "?" + urllib.parse.urlencode(qs)


STAGING = RelengEnvironment(
    name='staging',
    docs_bucket='s3://staging-docs',
    cache_bucket='s3://staging-cache',
    cache_store_overlay={'secret-key': 'staging.key'},
    releases_bucket='s3://staging-releases',
    git_repo='ssh://git@git.lix.systems/lix-project/lix-releng-staging',
    docker_targets=[
        # FIXME: how do we make sure that latest gets the latest of the *most recent* branch?
        DockerTarget('git.lix.systems/lix-project/lix-releng-staging',
                     tags=['{version}', '{major}']),
        DockerTarget('ghcr.io/lix-project/lix-releng-staging',
                     tags=['{version}', '{major}']),
    ],
)

ENVIRONMENTS = {
    'staging': STAGING,
}


@dataclasses.dataclass
class S3Credentials:
    name: str
    id: str
    secret_key: str