name: Publish release

# Portal does not deploy itself. Cutting a version is deliberate:
# `cargo release <level>` bumps Cargo.toml, commits, tags v<semver>,
# and pushes; this workflow reacts to the tag and publishes the
# artifact as a Gitea release. Each content repo (uhhm/questions,
# redoal/questions) pins PORTAL_RELEASE to one of these tags in its
# own deploy workflow - bumping the pin there is what rolls a version
# out to a site. Plain main pushes only run test.yml.

on:
  push:
    tags: ["v*"]

jobs:
  publish:
    runs-on: bare
    env:
      # The bare runner's own systemd service intentionally has a minimal
      # PATH/HOME (no rustup default toolchain in reach) - point it at the
      # shared toolchain install directly rather than assuming an ambient
      # dev shell environment.
      CARGO_HOME: /var/local/cargo
      RUSTUP_HOME: /var/local/rustup
      PATH: /var/local/cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/bin
      # Shared with interactive dev builds (see ~/.config/fish/config.fish)
      # so a crate compiled once, by either a manual build or CI, is
      # cached for the other - real cache hits, not just a warm toolchain.
      # SCCACHE_SERVER_PORT deliberately differs from the interactive
      # dev shell's (4227): sccache's server is discovered by a fixed
      # TCP port shared by every local user, so if both contexts used
      # the same port, whichever one's server happened to be running
      # would silently "win" and serve build requests it doesn't have
      # filesystem permission for. Separate ports keep each context's
      # own server answering its own requests; the cache directory
      # (not the server process) is what's actually shared.
      SCCACHE_DIR: /var/local/sccache
      SCCACHE_SERVER_PORT: "4228"
      CARGO_TARGET_DIR: /var/local/cargo-target
      # cargo-leptos's own downloaded tools (wasm-bindgen, wasm-opt) cache
      # under $XDG_CACHE_HOME - left at its default that resolves inside
      # this unit's systemd StateDirectory, files it creates there end up
      # owned by the kernel's overflow "nobody" uid instead of the
      # runner's own dynamic uid (a StateDirectory quirk, not something
      # in our control), so a later run can't execute what an earlier run
      # downloaded. Redirecting it to our own known-good shared dir avoids
      # that entirely.
      XDG_CACHE_HOME: /var/local/leptos-cache
    steps:
      - uses: actions/checkout@v4

      # SITE_NAME is read via option_env! (src/app.rs) - compile-time,
      # not a runtime env var. It is only the last-resort fallback name:
      # each instance's site.yaml (content-driven branding) overrides it,
      # so one artifact serves every site.
      - name: Build
        run: SITE_NAME=${{ vars.PORTAL_SITE_NAME }} cargo leptos build --release

      # The lint (uhhm/iris) is versioned as portal: this step re-pins
      # iris to the tag being released, builds and tests it against it,
      # and pushes the matching iris tag, which iris's own CI publishes.
      # A portal change to something the lint reads fails the release
      # right here. Needs IRIS_PUSH_USER (a variable) and IRIS_PUSH_TOKEN
      # (a secret) that may push to uhhm/iris; the workflow's own token
      # is scoped to this repo. A re-run of a tag whose iris tag already
      # exists just builds that.
      - name: Release iris to match
        env:
          # The shared cargo home is read-only for the runner, and a git
          # dependency has to be cloned into one (same as uhhm/iris's CI).
          CARGO_HOME: /var/local/cargo-target/iris-cargo-home
          RUSTC_WRAPPER: /usr/bin/sccache
          IRIS_PUSH_USER: ${{ vars.IRIS_PUSH_USER }}
          IRIS_PUSH_TOKEN: ${{ secrets.IRIS_PUSH_TOKEN }}
        run: |
          set -euo pipefail
          tag="${{ github.ref_name }}"
          ver="${tag#v}"
          host="${{ github.server_url }}"
          rm -rf iris-src
          git clone -q "$host/uhhm/iris.git" iris-src
          cd iris-src
          if git rev-parse -q --verify "refs/tags/$tag" >/dev/null; then
            echo "iris $tag already exists, building it"
            git checkout -q "$tag"
          else
            sed -i -E "s|^(portal = \{ git = \"[^\"]+\", tag = \")[^\"]+(\")|\1$tag\2|" Cargo.toml
            sed -i -E "0,/^version = \"[^\"]+\"/s//version = \"$ver\"/" Cargo.toml
            cargo update -q -p portal
            awk -v h="## $ver ($(date -u +%F)) - portal $tag" -v l="- Matches portal $tag (released by portal's publish job)." \
              'done==0 && /^## /{print h; print ""; print l; print ""; done=1} {print}' CHANGELOG.md > CHANGELOG.new
            mv CHANGELOG.new CHANGELOG.md
          fi
          cargo build --release
          cargo test
          if ! git rev-parse -q --verify "refs/tags/$tag" >/dev/null; then
            git config user.name "portal release"
            git config user.email "portal@uhhm.no"
            git commit -qam "Match portal $tag"
            git tag "$tag"
            git push -q "https://${IRIS_PUSH_USER}:${IRIS_PUSH_TOKEN}@${host#https://}/uhhm/iris.git" main "$tag"
            echo "pushed iris $tag"
          fi

      - name: Package
        run: |
          set -euo pipefail
          tag="${{ github.ref_name }}"
          stage=$(mktemp -d)
          cp "$CARGO_TARGET_DIR/release/portal" "$stage/portal"
          cp "$CARGO_TARGET_DIR/release/iris" "$stage/iris"
          # hash-files = true: leptos resolves hash.txt next to the running
          # binary, so it ships beside portal in the release dir.
          cp "$CARGO_TARGET_DIR/release/hash.txt" "$stage/hash.txt"
          # site-root ("target/site" in Cargo.toml) is project-relative,
          # not affected by CARGO_TARGET_DIR - only the plain `cargo build`
          # outputs (release/, front/) move with that override.
          cp -r target/site "$stage/site"
          tar -C "$stage" -czf "portal-$tag.tar.gz" portal iris hash.txt site
          rm -rf "$stage"

      # The run's own ephemeral token has write access to this repo -
      # no long-lived PAT to manage. The tag already exists (cargo
      # release pushed it), so the release attaches to it; a re-run
      # finds the existing release instead of failing.
      - name: Publish release
        run: |
          set -euo pipefail
          tag="${{ github.ref_name }}"
          api="${{ github.server_url }}/api/v1/repos/${{ github.repository }}"
          auth="Authorization: token ${{ secrets.GITHUB_TOKEN }}"
          # The release notes are this version's section of CHANGELOG.md.
          notes=$(awk -v v="${tag#v}" '/^## /{p = ($2 == v)} p' CHANGELOG.md | tail -n +2)
          body=$(jq -n --arg tag "$tag" --arg notes "$notes" '{tag_name: $tag, name: $tag, body: $notes}')
          id=$(curl -sf -X POST -H "$auth" -H 'Content-Type: application/json' \
            -d "$body" "$api/releases" | jq .id) \
            || id=$(curl -sf -H "$auth" "$api/releases/tags/$tag" | jq .id)
          # Replace the asset if a re-run already uploaded one.
          for aid in $(curl -sf -H "$auth" "$api/releases/$id/assets" | jq '.[].id'); do
            curl -sf -X DELETE -H "$auth" "$api/releases/$id/assets/$aid"
          done
          curl -sf -X POST -H "$auth" \
            -F "attachment=@portal-$tag.tar.gz" \
            "$api/releases/$id/assets?name=portal-$tag.tar.gz" > /dev/null
          echo "published $tag"