#!/usr/bin/env bash
# refresh-fork-upstream-map.sh — Update local/fork-upstream-map.toml
# with the current upstream URLs and latest release tags for each
# Cat 2 fork. This is the canonical source of truth for
# verify-fork-versions.sh.

set -euo pipefail

ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
cd "$ROOT"

MAP="$ROOT/local/fork-upstream-map.toml"

# fork_name  upstream_url  latest_tag
declare -A FORKS=(
    [syscall]="https://gitlab.redox-os.org/redox-os/syscall.git"
    [libredox]="https://gitlab.redox-os.org/redox-os/libredox.git"
    [redoxfs]="https://gitlab.redox-os.org/redox-os/redoxfs.git"
    [redox-scheme]="https://gitlab.redox-os.org/redox-os/redox-scheme.git"
    [relibc]="https://gitlab.redox-os.org/redox-os/relibc.git"
    [kernel]="https://gitlab.redox-os.org/redox-os/kernel.git"
    [bootloader]="https://gitlab.redox-os.org/redox-os/bootloader.git"
    [installer]="https://gitlab.redox-os.org/redox-os/installer.git"
    [userutils]="https://gitlab.redox-os.org/redox-os/userutils.git"
)

{
    echo "# fork-upstream-map.toml — Auto-generated by"
    echo "# local/scripts/refresh-fork-upstream-map.sh. Do not edit by hand."
    echo "# Format: <fork-name>  <upstream-git-url>  <upstream-release-tag>"
    echo ""
    for fork in syscall libredox redoxfs redox-scheme relibc kernel bootloader installer userutils; do
        url="${FORKS[$fork]:-}"
        if [ -z "$url" ]; then
            echo "WARN: no upstream URL for $fork, skipping" >&2
            continue
        fi
        # Get latest tag matching the project's version scheme
        # (e.g. 0.9.0, 0.1.18, 0.5.12, 1.0.0). Exclude pre-release and
        # non-stable tags.
        latest=$(cd /tmp && git ls-remote --tags --sort=-v:refname "$url" 2>/dev/null \
            | awk '{print $2}' \
            | sed 's|refs/tags/||' \
            | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' \
            | head -1)
        if [ -z "$latest" ]; then
            echo "WARN: couldn't determine latest tag for $fork from $url" >&2
            continue
        fi
        printf "%-13s %-55s %s\n" "$fork" "$url" "$latest"
    done
} > "$MAP"

echo "Updated $MAP"
cat "$MAP"