[tasks.tags]
description = "Show the Docker Hub tags for the current image version"
run = '''
#!/usr/bin/env bash
set -euo pipefail

arg_value() {
  local name=$1
  local values

  values=$(sed -n "s/^ARG ${name}=//p" Containerfile | sort -u)
  if [[ -z $values || $values == *$'\n'* ]]; then
    echo "Containerfile must define one consistent value for ARG ${name}" >&2
    exit 1
  fi

  printf '%s' "$values"
}

repository=${CGIT_IMAGE_REPOSITORY:-docker.io/pablu/cgit}
cgit_version=$(arg_value CGIT_VERSION)
image_revision=$(arg_value IMAGE_REVISION)

if [[ ! $cgit_version =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
  echo "CGIT_VERSION must be a three-part version, got: ${cgit_version}" >&2
  exit 1
fi
if [[ ! $image_revision =~ ^[0-9]+$ ]]; then
  echo "IMAGE_REVISION must be a non-negative integer, got: ${image_revision}" >&2
  exit 1
fi

minor_version=${cgit_version%.*}
major_version=${cgit_version%%.*}

printf '%s\n' \
  "${repository}:${cgit_version}-r${image_revision}" \
  "${repository}:${cgit_version}" \
  "${repository}:${minor_version}" \
  "${repository}:${major_version}"
'''

[tasks.build]
description = "Build the current cgit image with Podman"
run = '''
#!/usr/bin/env bash
set -euo pipefail

arg_value() {
  local name=$1
  local values

  values=$(sed -n "s/^ARG ${name}=//p" Containerfile | sort -u)
  if [[ -z $values || $values == *$'\n'* ]]; then
    echo "Containerfile must define one consistent value for ARG ${name}" >&2
    exit 1
  fi

  printf '%s' "$values"
}

repository=${CGIT_IMAGE_REPOSITORY:-docker.io/pablu/cgit}
cgit_version=$(arg_value CGIT_VERSION)
image_revision=$(arg_value IMAGE_REVISION)
image=${repository}:${cgit_version}-r${image_revision}

podman build --tag "$image" --file Containerfile .
'''

[tasks.push]
description = "Build and push the versioned and rolling Docker Hub tags"
depends = ["build"]
run = '''
#!/usr/bin/env bash
set -euo pipefail

mapfile -t images < <(mise run tags)
source_image=${images[0]}

for image in "${images[@]}"; do
  if [[ $image != "$source_image" ]]; then
    podman tag "$source_image" "$image"
  fi
  podman push "$image"
done
'''