name: update riscv dependent versions

on:
  workflow_dispatch:
  push:
    branches: 
      - master

permissions:
  contents: write

concurrency:
  group: update-riscv-dependent
  cancel-in-progress: false

jobs:
  update:
    runs-on: ubuntu-24.04

    steps:
      - uses: actions/checkout@v6

      - uses: actions/setup-dotnet@v5
        with:
          dotnet-version: 10.0.1xx

      - run: sudo apt-get update && sudo apt-get install -y jq

      - name: resolve
        id: resolve
        shell: bash
        run: |
          set -euo pipefail

          TARGET_FILES=(
            package-rhel-riscv.sh
            package-debian-riscv.sh
          )

          echo "==> restore projects"
          find . -name '*.csproj' | while read -r p; do
            if grep -q '<TargetFramework>.*-windows' "$p"; then
              echo "[skip] $p"
            else
              echo "[restore] $p"
              dotnet restore "$p" -p:EnableWindowsTargeting=true || true
            fi
          done

          echo "==> collect assets"
          mapfile -t ASSETS < <(find . -path '*/obj/project.assets.json')
          printf '  %s\n' "${ASSETS[@]}"

          ALL_LIBS=()
          for f in "${ASSETS[@]}"; do
            mapfile -t libs < <(jq -r '.libraries | keys[]' "$f")
            ALL_LIBS+=("${libs[@]}")
          done
          mapfile -t LIBS < <(printf '%s\n' "${ALL_LIBS[@]}" | sort -u)

          extract() {
            local name="$1"
            for i in "${LIBS[@]}"; do
              [[ "$i" == "$name/"* ]] && echo "${i#*/}"
            done | sort -u
          }

          norm_version() { echo "${1#v}"; }
          is_preview() { [[ "$(norm_version "$1")" == *-* ]]; }
          base_version() { local v; v="$(norm_version "$1")"; echo "${v%%-*}"; }

          key() {
            local v core pre a b c p1 p2 p3
            v="$(norm_version "$1")"
            core="${v%%-*}"
            [[ "$v" == *-* ]] && pre="${v#*-}" || pre=""

            IFS='.' read -r a b c <<< "$core"
            a=${a//[^0-9]/}; a=${a:-0}
            b=${b//[^0-9]/}; b=${b:-0}
            c=${c//[^0-9]/}; c=${c:-0}

            if [[ -z "$pre" ]]; then
              printf "%05d.%05d.%05d.1\n" "$a" "$b" "$c"
            else
              pre="${pre#preview.}"
              IFS='.' read -ra p <<< "$pre"
              p1=${p[0]:-0}; p1=${p1//[^0-9]/}; p1=${p1:-0}
              p2=${p[1]:-0}; p2=${p2//[^0-9]/}; p2=${p2:-0}
              p3=${p[2]:-0}; p3=${p3//[^0-9]/}; p3=${p3:-0}
              printf "%05d.%05d.%05d.0.%05d.%05d.%05d\n" \
                "$a" "$b" "$c" "$p1" "$p2" "$p3"
            fi
          }

          latest() {
            local best="" best_key="" cur cur_key
            for cur in "$@"; do
              [[ -n "$cur" ]] || continue
              cur_key="$(key "$cur")"
              echo "  candidate: $cur -> $cur_key" >&2
              if [[ -z "$best_key" || "$cur_key" > "$best_key" ]]; then
                best="$cur"
                best_key="$cur_key"
              fi
            done
            echo "$best"
          }

          log_mixed_versions() {
            local name="$1"; shift
            local versions=("$@") bases=() v b
            mapfile -t bases < <(
              for v in "${versions[@]}"; do
                [[ -n "$v" ]] && base_version "$v"
              done | sort -u
            )

            for b in "${bases[@]}"; do
              local has_stable=0 has_preview=0 matched=()
              for v in "${versions[@]}"; do
                [[ -n "$v" ]] || continue
                [[ "$(base_version "$v")" == "$b" ]] || continue
                matched+=("$v")
                if is_preview "$v"; then
                  has_preview=1
                else
                  has_stable=1
                fi
              done

              if [[ "$has_stable" -eq 1 && "$has_preview" -eq 1 ]]; then
                echo "[warn] $name: stable and preview both exist for base $b, prefer stable for this base" >&2
                printf '  %s\n' "${matched[@]}" >&2
              fi
            done
          }

          filter_mixed_versions() {
            local versions=("$@") stable_bases=() v b
            mapfile -t stable_bases < <(
              for v in "${versions[@]}"; do
                if [[ -n "$v" ]] && ! is_preview "$v"; then
                  base_version "$v"
                fi
              done | sort -u
            )

            for v in "${versions[@]}"; do
              [[ -n "$v" ]] || continue
              b="$(base_version "$v")"
              if is_preview "$v" && printf '%s\n' "${stable_bases[@]}" | grep -qxF "$b"; then
                continue
              fi
              echo "$v"
            done
          }

          read_var() {
            sed -nE "s/^$2=\"\\\$\\{$2:-([^\"]+)\\}\".*/\\1/p" "$1" | head -n1
          }

          choose_final_version() {
            local old="$1" new="$2"
            [[ -n "$new" ]] || { echo "$old"; return; }
            [[ -n "$old" ]] || { echo "$new"; return; }
            if [[ "$(key "$old")" > "$(key "$new")" ]]; then
              echo "$old"
            else
              echo "$new"
            fi
          }

          update_file() {
            local file="$1"
            local old_skia old_harf final_skia final_harf changed=0

            old_skia="$(read_var "$file" SKIA_VER)"
            old_harf="$(read_var "$file" HARFBUZZ_VER)"
            final_skia="$(choose_final_version "$old_skia" "$NEW_SKIA")"
            final_harf="$(choose_final_version "$old_harf" "$NEW_HARF")"

            echo "==> check $file"
            echo "    SKIA_VER:      ${old_skia} -> ${NEW_SKIA} (apply: ${final_skia})"
            echo "    HARFBUZZ_VER:  ${old_harf} -> ${NEW_HARF} (apply: ${final_harf})"

            if [[ "$old_skia" != "$final_skia" ]]; then
              sed -i -E "s|^SKIA_VER=.*|SKIA_VER=\"\\\${SKIA_VER:-$final_skia}\"|" "$file"
              changed=1
            fi
            if [[ "$old_harf" != "$final_harf" ]]; then
              sed -i -E "s|^HARFBUZZ_VER=.*|HARFBUZZ_VER=\"\\\${HARFBUZZ_VER:-$final_harf}\"|" "$file"
              changed=1
            fi

            grep -qF "SKIA_VER=\"\${SKIA_VER:-$final_skia}\"" "$file"
            grep -qF "HARFBUZZ_VER=\"\${HARFBUZZ_VER:-$final_harf}\"" "$file"
            bash -n "$file"

            [[ "$changed" -eq 1 ]]
          }

          mapfile -t SKIA < <(extract SkiaSharp)
          mapfile -t HARF < <(extract HarfBuzzSharp)

          echo "==> SkiaSharp"
          printf '  %s\n' "${SKIA[@]}"
          echo "==> HarfBuzzSharp"
          printf '  %s\n' "${HARF[@]}"

          log_mixed_versions "SkiaSharp" "${SKIA[@]}"
          log_mixed_versions "HarfBuzzSharp" "${HARF[@]}"

          mapfile -t SKIA < <(filter_mixed_versions "${SKIA[@]}")
          mapfile -t HARF < <(filter_mixed_versions "${HARF[@]}")

          NEW_SKIA="$(latest "${SKIA[@]}")"
          NEW_HARF="$(latest "${HARF[@]}")"

          echo "==> selected"
          echo "  SKIA_VER=$NEW_SKIA"
          echo "  HARFBUZZ_VER=$NEW_HARF"

          any_changed=0
          changed_files=()

          for file in "${TARGET_FILES[@]}"; do
            if update_file "$file"; then
              any_changed=1
              changed_files+=("$file")
            fi
          done

          if [[ "$any_changed" -eq 0 ]]; then
            echo "changed=0" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          {
            echo "changed=1"
            echo "changed_files<<EOF"
            printf '%s\n' "${changed_files[@]}"
            echo "EOF"
          } >> "$GITHUB_OUTPUT"

      - name: commit
        if: steps.resolve.outputs.changed == '1'
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add package-rhel-riscv.sh package-debian-riscv.sh
          if git diff --cached --quiet; then
            exit 0
          fi
          git commit -m "chore: update riscv native dependency versions"
          git push