#!/usr/bin/env bash
set -euo pipefail

# 🧪 Load local environment overrides
if [[ -f .localenv.sh ]]; then
    # If a custom path or other environment variables are needed, include them in .localenv.sh
    source .localenv.sh
fi

# 🧭 Config
VERSION=$(grep "^const.*version\ *=\ *"  main.go | sed -E 's/.*"([^"]+)".*/\1/')
TAG="v${VERSION}"
BIN_NAME="x11proxy"
DIST_DIR="dist/X11Proxy"
ARCHIVE_NAME="X11Proxy-${VERSION}-linux-x86_64.tar.gz"
REPO="ezterry/X11Proxy"
GITEA_URL="https://git-hojo.devnull.name"

if [[ -z "$VERSION" ]]; then
    echo "❌ Failed to extract version from main.go"
    echo "please fix the version constant in main.go"
    exit 1
fi

echo "$BIN_NAME build script (version: $VERSION)"

# 🧹 Clean build artifacts
clean() {
    rm -f "$BIN_NAME"
    rm -rf dist "$ARCHIVE_NAME"
}

# 🛠️ Build binary
build_binary() {
    echo "🔨 Building $BIN_NAME..."
    go build -ldflags "-X main.version=${VERSION}" -o "$BIN_NAME" .
}

# 📦 Build distribution package
build_dist() {
    clean
    build_binary

    echo "📦 Creating distribution package..."
    mkdir -p "$DIST_DIR"
    cp "$BIN_NAME" hello_xclock.sh README.md LICENSE.md "$DIST_DIR"
    tar -czvf "$ARCHIVE_NAME" -C dist X11Proxy
    echo "✅ Built: $ARCHIVE_NAME"
}

# 🚀 Publish release to Gitea
publish_release() {
    #verify we will not run into an issue from a missing jq command
    command -v jq >/dev/null || {
        echo "❌ 'jq' is required but not installed. Please install it to continue."
        exit 1
    }

    build_dist

    echo "🔐 Enter Gitea token (will not be saved):"
    read -r -s GITEA_TOKEN
    echo

    echo "🏷️ Tagging release: $TAG"
    if git rev-parse "$TAG" >/dev/null 2>&1; then
        echo "❌ Tag $TAG already exists"
        exit 1
    fi
    git tag -a "$TAG" -m "Release $TAG"
    git push origin $TAG

    echo "📤 Creating release on Gitea..."
    RELEASE_JSON=$(curl -s -X POST "${GITEA_URL}/api/v1/repos/${REPO}/releases" \
        -H "Authorization: token ${GITEA_TOKEN}" \
        -H "Content-Type: application/json" \
        -d @- <<EOF
{
  "tag_name": "${TAG}",
  "name": "X11Proxy ${VERSION}",
  "body": "Release ${VERSION}",
  "draft": false,
  "prerelease": false
}
EOF
    )

    RELEASE_ID=$(echo "$RELEASE_JSON" | jq -r '.id')

    echo "📎 Uploading asset to release ID ${RELEASE_ID}..."
    curl -s -X POST "${GITEA_URL}/api/v1/repos/${REPO}/releases/${RELEASE_ID}/assets" \
        -H "Authorization: token ${GITEA_TOKEN}" \
        -F name="${ARCHIVE_NAME}" \
        -F attachment=@"${ARCHIVE_NAME}"

    echo "✅ Published release ${TAG} with asset ${ARCHIVE_NAME}"
}

# 📖 Help message
print_help() {
    cat <<EOF
Usage: ./build.sh [OPTION]

Build and manage the X11Proxy project.

Options:
  --dist       Build a distribution package (tar.gz)
  --publish    Build and publish release to Gitea (asks for token)
  --help       Show this help message

By default (no options), the script builds the x11proxy binary.

Environment:
  If a .localenv.sh file exists, it will be sourced.
  Use this to override paths or set environment variables.

All operations assume a clean build:
  Removes previous binary and dist artifacts before building.
EOF
}

# 🧭 Main logic
case "${1:-}" in
    --dist)
        build_dist
        ;;
    --publish)
        publish_release
        ;;
    --help)
        print_help
        ;;
    "")
        clean
        build_binary
        ;;
    *)
        echo "❌ Unknown option: $1"
        print_help
        exit 1
        ;;
esac