#!/usr/bin/env bash
# Every distros/<name>/ needs a complete distro.env and an entry in every Woodpecker
# matrix, or a newly added distro silently never gets built.
set -uo pipefail

KEYS="BASE_IMAGE_NAME IMAGE TAG_SUFFIX DEFAULT PACKAGES"
WORKFLOWS=(.woodpecker/build.yaml .woodpecker/docker.yaml)

fail=0
for d in distros/*/; do
  n=$(basename "$d")
  for k in $KEYS; do
    grep -q "^${k}=" "${d}distro.env" || { echo "${d}distro.env: missing ${k}"; fail=1; }
  done
  for wf in "${WORKFLOWS[@]}"; do
    grep -q "DISTRO: ${n}\$" "$wf" || { echo "${wf}: distro ${n} missing from matrix"; fail=1; }

    # A matrix entry that restates a distro.env key must not drift from it — a stale
    # BASE_IMAGE here silently overrides distro.env for every CI build.
    while IFS='=' read -r k v; do
      [ -n "$k" ] || continue
      grep -q "^${k}=" "${d}distro.env" || continue
      ev=$(sed -n "s/^${k}=//p" "${d}distro.env" | head -1 | sed 's/^"//;s/"$//')
      [ "$v" = "$ev" ] || { echo "${wf}: matrix ${k}=\"${v}\" for ${n} disagrees with ${d}distro.env (\"${ev}\")"; fail=1; }
    done <<EOF
$(awk -v d="$n" '
  $0 ~ "^[[:space:]]*-[[:space:]]+DISTRO:[[:space:]]*"d"[[:space:]]*$" { inb=1; next }
  inb && /^[[:space:]]*-/ { inb=0 }
  inb && match($0, /^[[:space:]]+[A-Z_]+:/) {
    k=$1; sub(/:$/,"",k)
    v=$0; sub(/^[[:space:]]*[A-Z_]+:[[:space:]]*/,"",v); gsub(/^"|"$/,"",v)
    print k "=" v
  }
' "$wf")
EOF
  done
done

# Exactly one distro owns the unsuffixed :<version> tag.
defaults=$(grep -l 'DEFAULT="true"' distros/*/distro.env | wc -l)
[ "$defaults" -eq 1 ] || { echo "expected exactly one distro with DEFAULT=\"true\", found ${defaults}"; fail=1; }

exit "$fail"