ci: start scaffolding a build workflow

.github/workflows/build.yaml

@@ -0,0 +1,42 @@
+name: Build
+
+on:
+  push:
+    branches-ignore:
+      - rebase-pull-request**
+      - cherry-pick-rebase-pull-request**
+      - flatpak-repository
+  pull_request:
+
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.ref }}'
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - name: Install dependencies
+        run: |
+          DEBIAN_FRONTEND=noninteractive sudo apt-get update -y
+          sudo apt-get install --no-install-recommends -y \
+            icoutils \
+            flatpak \
+            flatpak-builder \
+            elfutils
+          flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+      - name: Cache Flatpak builder
+        id: cache-flatpak-builder
+        uses: actions/cache@v3
+        with:
+          path: .flatpak-builder
+          key: ${{ runner.os }}-flatpak-builder-${{ hashFiles('com.jagex.Launcher.yaml') }}
+      - name: Build Flatpak
+        run: |
+          ./build.sh

.gitignore

@@ -4,3 +4,4 @@ out/
 export/
 resources/icons/*.png
 *.flatpak
+repo/

README.md

@@ -6,7 +6,20 @@ This is a Flatpak package for the Jagex Launcher. It packages the [official upst
 
 ### Installing the Launcher
 
-It is unlikely that Flathub would accept a proprietary application like the Jagex Launcher, paricularly one that is wrapped in Wine. As such, this Flatpak is not available on Flathub. You can install it by downloading the [latest release](https://github.com/USA-RedDragon/jagex-launcher-flatpak/releases/latest) and installing it with the following command:
+It is unlikely that Flathub would accept a proprietary application like the Jagex Launcher, paricularly one that is wrapped in Wine. As such, this Flatpak is not available on Flathub.
+
+### Flatpak Remote
+
+You can install it by adding the remote and installing it with the following commands:
+
+```bash
+flatpak remote-add --if-not-exists usareddragon https://jagexlauncher.flatpak.mcswain.dev/.flatpakrepo
+flatpak install --user usareddragon com.jagex.Launcher
+```
+
+### Manual Download
+
+You can install it by downloading the [latest release](https://github.com/USA-RedDragon/jagex-launcher-flatpak/releases/latest) and installing it with the following command:
 
 ```bash
 flatpak install --user com.jagex.Launcher.flatpak

build.sh

@@ -2,6 +2,12 @@
 
 set -euo pipefail
 
+# Dosign should be 1 if $1 is set
+DOSIGN=0
+if [[ ! -z ${1+x} ]]; then
+    DOSIGN=1
+fi
+
 # renovate: datasource=git-tags depName=https://gitlab.com/freedesktop-sdk/freedesktop-sdk.git
 FREEDESKTOP_SDK_GIT_VERSION=freedesktop-sdk-23.08.6
 FREEDESKTOP_SDK_VERSION=$(echo ${FREEDESKTOP_SDK_GIT_VERSION} | cut -d'-' -f3 | cut -d'.' -f1-2)
@@ -33,8 +39,43 @@ if [[ ${HAS_NVIDIA} -eq 1 ]]; then
         org.freedesktop.Platform.GL32.nvidia-${NVIDIA_VERISON}/x86_64
 fi
 
-flatpak-builder --user --force-clean out com.jagex.Launcher.yaml
-flatpak build-export export out
-flatpak build-bundle -vv export com.jagex.Launcher.flatpak com.jagex.Launcher --repo-url=https://flatpak.mcswain.dev --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo
+REPO_ARGS=""
+GPG_ARGS=""
+if [[ ${DOSIGN} -eq 1 ]]; then
+    REPO_ARGS="--repo ./repo"
+    GPG_ARGS="--gpg-sign=7ADE1CA57A2E2272"
+fi
+
+flatpak-builder ${REPO_ARGS} ${GPG_ARGS} --default-branch=stable --user --ccache --force-clean out com.jagex.Launcher.yaml
+if [[ ${DOSIGN} -eq 0 ]]; then
+    flatpak build-export repo out
+fi
+flatpak build-update-repo ${GPG_ARGS} repo --title="Jagex Launcher" --generate-static-deltas --default-branch=stable
+
+flatpak build-bundle ${GPG_ARGS} --repo-url=https://jagexlauncher.flatpak.mcswain.dev --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo repo com.jagex.Launcher.flatpak com.jagex.Launcher stable &
+PID=$!
+
+COUNTER=0
+# Timeout after 1 hour
+MAX_COUNTER=3600
+while kill -0 $PID 2> /dev/null; do
+    NUM_DOT=$((COUNTER%5))
+    DOTS=$(printf '.%.0s' $(seq 0 $NUM_DOT))
+    # Overwrite the line
+    echo "Exporting flatpak${DOTS}"
+    COUNTER=$((COUNTER+1))
+    if [[ ${COUNTER} -gt ${MAX_COUNTER} ]]; then
+        echo "Timed out after 1 hour"
+        exit 1
+    fi
+    sleep 1
+done
+
+# Check exit code
+wait $PID
+if [[ $? -ne 0 ]]; then
+    echo "Failed to export flatpak"
+    exit 1
+fi
 
 echo "Built flatpak to com.jagex.Launcher.flatpak"