#!/bin/bash
# push-release.sh - Push an existing release to Gitea
# Usage: ./push-release.sh --version v1.0.0 --gitea-token TOKEN

set -e

# Configuration
BINARY_NAME="aideris-cli"
GITEA_URL="https://gitea.clickthings.net"
REPO_OWNER="whuang"
REPO_NAME="aideris-cli-dist"

# Parse arguments
VERSION=""
GITEA_TOKEN=""

while [ $# -gt 0 ]; do
    case "$1" in
        --version)
            VERSION="$2"
            shift 2
            ;;
        --gitea-token)
            GITEA_TOKEN="$2"
            shift 2
            ;;
        *)
            echo "Unknown option: $1"
            exit 1
            ;;
    esac
done

if [ -z "$VERSION" ]; then
    echo "Error: --version is required"
    echo "Usage: ./push-release.sh --version v1.0.0 --gitea-token TOKEN"
    exit 1
fi

if [ -z "$GITEA_TOKEN" ]; then
    echo "Error: --gitea-token is required"
    echo "Usage: ./push-release.sh --version v1.0.0 --gitea-token TOKEN"
    exit 1
fi

BUILD_DIR="dist/${VERSION}"

if [ ! -d "$BUILD_DIR" ]; then
    echo "Error: Build directory not found: $BUILD_DIR"
    echo "Run the build first to create binaries"
    exit 1
fi

echo "========================================"
echo "  Aideris CLI Release Push"
echo "========================================"
echo ""
echo "Version: $VERSION"
echo "Build dir: $BUILD_DIR"
echo ""

# Check if release notes exist
RELEASE_NOTES="${BUILD_DIR}/RELEASE_NOTES.md"
if [ ! -f "$RELEASE_NOTES" ]; then
    echo "Warning: Release notes not found at $RELEASE_NOTES"
    echo "Creating default release notes..."
    cat > "$RELEASE_NOTES" << EOF
# Aideris CLI ${VERSION}

## Installation

### Quick Install
\`\`\`bash
curl -fsSL https://gitea.clickthings.net/${REPO_OWNER}/${REPO_NAME}/raw/branch/main/install.sh | sh
\`\`\`

### Manual Download
Download the binary for your platform from the Assets below.
EOF
fi

# Check if checksums exist
CHECKSUMS_FILE="${BUILD_DIR}/checksums.txt"
if [ ! -f "$CHECKSUMS_FILE" ]; then
    echo "Generating checksums..."
    cd "$BUILD_DIR"
    sha256sum ${BINARY_NAME}-* > checksums.txt 2>/dev/null || true
    cd - > /dev/null
fi

echo "Pushing to Gitea..."

# Function to make API calls with error handling
gitea_api() {
    local method=$1
    local endpoint=$2
    local data=$3
    
    if [ -z "$data" ]; then
        curl -fsSL -X "$method" \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}${endpoint}" 2>&1
    else
        curl -fsSL -X "$method" \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$data" \
            "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}${endpoint}" 2>&1
    fi
}

# Check if release already exists
echo "Checking for existing release..."
EXISTING_RELEASE=$(gitea_api "GET" "/releases/tags/${VERSION}" 2>/dev/null || echo "{}")
RELEASE_ID=$(echo "$EXISTING_RELEASE" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)

if [ -n "$RELEASE_ID" ]; then
    echo "  ✓ Found existing release: ID $RELEASE_ID"
else
    echo "  Creating new release..."
    
    # Escape release notes for JSON
    ESCAPED_BODY=$(cat "$RELEASE_NOTES" | python3 -c 'import json,sys; print(json.dumps(sys.stdin.read())[1:-1])' 2>/dev/null || cat "$RELEASE_NOTES" | sed 's/"/\\"/g' | tr '\n' ' ')
    
    RELEASE_PAYLOAD=$(cat << EOF
{
  "tag_name": "${VERSION}",
  "name": "${VERSION}",
  "body": "${ESCAPED_BODY}",
  "draft": false,
  "prerelease": false
}
EOF
)

    CREATE_RESPONSE=$(gitea_api "POST" "/releases" "$RELEASE_PAYLOAD" 2>&1 || true)
    RELEASE_ID=$(echo "$CREATE_RESPONSE" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)
    
    if [ -n "$RELEASE_ID" ]; then
        echo "  ✓ Release created: ID $RELEASE_ID"
    else
        echo "  ✗ Failed to create release"
        echo "Response: $CREATE_RESPONSE"
        exit 1
    fi
fi

# Get list of existing assets
echo ""
echo "Fetching existing assets..."
EXISTING_ASSETS=$(gitea_api "GET" "/releases/${RELEASE_ID}/assets" 2>/dev/null || echo "[]")

# Upload assets
echo ""
echo "Uploading assets..."

upload_count=0
skip_count=0

for asset in ${BUILD_DIR}/${BINARY_NAME}-* ${BUILD_DIR}/checksums.txt; do
    if [ -f "$asset" ]; then
        FILENAME=$(basename "$asset")
        
        # Check if asset already exists
        ASSET_EXISTS=$(echo "$EXISTING_ASSETS" | grep -o "\"name\":\"${FILENAME}\"" | head -1 || echo "")
        
        if [ -n "$ASSET_EXISTS" ]; then
            echo "  ⊘ Skipping (exists): $FILENAME"
            skip_count=$((skip_count + 1))
        else
            echo "  ↑ Uploading: $FILENAME..."
            
            UPLOAD_RESPONSE=$(curl -fsSL -X POST \
                -H "Authorization: token ${GITEA_TOKEN}" \
                -H "Content-Type: application/octet-stream" \
                --data-binary @"$asset" \
                "${GITEA_URL}/api/v1/repos/${REPO_OWNER}/${REPO_NAME}/releases/${RELEASE_ID}/assets?name=${FILENAME}" 2>&1 || true)
            
            UPLOADED_ID=$(echo "$UPLOAD_RESPONSE" | grep -o '"id":[0-9]*' | head -1 | cut -d: -f2)
            
            if [ -n "$UPLOADED_ID" ]; then
                echo "    ✓ Uploaded: $FILENAME"
                upload_count=$((upload_count + 1))
            else
                echo "    ✗ Failed to upload: $FILENAME"
                echo "    Response: $UPLOAD_RESPONSE"
            fi
        fi
    fi
done

echo ""
echo "========================================"
echo "  Push Complete"
echo "========================================"
echo ""
echo "Uploaded: $upload_count asset(s)"
echo "Skipped: $skip_count existing asset(s)"
echo ""
echo "Release URL: ${GITEA_URL}/${REPO_OWNER}/${REPO_NAME}/releases/tag/${VERSION}"