install: add android build script (#877)

build-android.sh

@@ -0,0 +1,87 @@
+#!/usr/bin/env sh
+# Safety measures
+set -eu
+
+u="$USER"
+tmp=$(mktemp -d -t)
+conf="${XDG_CONFIG_HOME:-$HOME/.config}"
+commands="nix git gradle unzip curl"
+
+nix_setup() {
+  # Pre-setup nix
+  [ ! -d /nix ] && sudo sh -c "mkdir -p /nix && chown -R $u /nix"
+
+  [ ! -d "$conf/nix" ] && mkdir -p "$conf/nix"
+
+  printf "sandbox = true\nmax-jobs = auto\nexperimental-features = nix-command flakes\nextra-substituters = https://cache.zw3rk.com\ntrusted-public-keys = loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk=" > "$conf/nix/nix.conf"
+
+  # Install nix
+  curl -L https://nixos.org/nix/install -o "$tmp/nix-install"
+  chmod +x "$tmp/nix-install" && "$tmp/nix-install" --no-daemon
+
+  . "$HOME/.nix-profile/etc/profile.d/nix.sh"
+}
+
+git_setup() {
+  # Clone simplex
+  git clone https://github.com/simplex-chat/simplex-chat "$tmp/simplex-chat"
+
+  # Switch to nix-android branch
+  git -C "$tmp/simplex-chat" switch nix-android
+
+  # Create missing folders
+  mkdir -p "$tmp/simplex-chat/apps/android/app/src/main/cpp/libs/arm64-v8a"
+}
+
+checks() {
+    for i in $commands; do
+      case $i in
+        nix)
+          if ! command -v "$i" > /dev/null 2>&1 || [ ! -f "$HOME/.nix-profile/etc/profile.d/nix.sh" ]; then
+            nix_setup
+          fi
+          ;;
+        *) 
+          if ! command -v "$i" > /dev/null 2>&1; then
+            commands_failed="$i $commands_failed"
+          fi
+          ;;
+      esac
+  done
+	
+  set +u
+
+  if [ -n "$commands_failed" ]; then
+    commands_failed=${commands_failed% *}
+    printf "%s is not found in your \$PATH. Please install them and re-run the script.\n" "$commands_failed"
+    exit 1
+  fi
+
+  set -u
+}
+
+build() {
+  # Build simplex lib
+  nix build "$tmp/simplex-chat/#packages.x86_64-linux.aarch64-android:lib:simplex-chat"
+  unzip -o "$PWD/result/pkg-aarch64-android-libsimplex.zip" -d "$tmp/simplex-chat/apps/android/app/src/main/cpp/libs/arm64-v8a"
+
+  # Build android suppprt lib
+  nix build "$tmp/simplex-chat/#packages.x86_64-linux.aarch64-android:lib:support"
+  unzip -o "$PWD/result/pkg-aarch64-android-libsupport.zip" -d "$tmp/simplex-chat/apps/android/app/src/main/cpp/libs/arm64-v8a"
+
+  gradle -p "$tmp/simplex-chat/apps/android/" clean build
+}
+
+final() {
+  cp "$tmp/simplex-chat/apps/android/app/build/outputs/apk/release/app-release-unsigned.apk" "$PWD/simplex-chat.apk"
+  printf "Simplex-chat was successfully compiled: %s/simplex-chat.apk\nDelete nix and gradle caches with 'rm -rf /nix && rm \$HOME/.nix* && \$HOME/.gradle/caches' in case if no longer needed.\n" "$PWD"
+}
+
+main() {
+  checks
+  git_setup
+  build
+  final
+}
+
+main