#!/bin/bash
# Parallel Cloudron Application Processor

set -e

# Configuration
WORKSPACE_DIR="/home/localuser/TSYSDevStack/Cloudron/CloudronPackages-Workspace"
ARTIFACTS_DIR="/home/localuser/TSYSDevStack/Cloudron/CloudronPackages-Artifacts"
MAX_PARALLEL=5  # Process 5 apps at once

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

# Logging
log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[SUCCESS]${NC} $1"; }
log_warning() { echo -e "${YELLOW}[WARNING]${NC} $1"; }
log_error() { echo -e "${RED}[ERROR]${NC} $1"; }

# Process single application
process_app() {
    local app_dir="$1"
    local app_name=$(basename "$app_dir")
    
    log_info "Processing $app_name"
    
    # Skip if already processed
    if [ -d "$app_dir/app" ] && [ -f "$app_dir/app/manifest.json" ]; then
        log_warning "$app_name already has Cloudron package, skipping"
        return 0
    fi
    
    # Detect application type
    local app_type="unknown"
    if [ -f "$app_dir/package.json" ]; then
        app_type="nodejs"
    elif [ -f "$app_dir/go.mod" ]; then
        app_type="golang"
    elif [ -f "$app_dir/requirements.txt" ] || [ -f "$app_dir/setup.py" ] || [ -f "$app_dir/pyproject.toml" ]; then
        app_type="python"
    elif [ -f "$app_dir/Cargo.toml" ]; then
        app_type="rust"
    elif [ -f "$app_dir/pom.xml" ] || [ -f "$app_dir/build.gradle" ]; then
        app_type="java"
    elif [ -f "$app_dir/Gemfile" ] || [ -f "$app_dir/Gemfile.lock" ]; then
        app_type="ruby"
    elif [ -f "$app_dir/composer.json" ]; then
        app_type="php"
    fi
    
    log_info "Detected $app_name as $app_type"
    
    # Create Cloudron package structure
    mkdir -p "$app_dir/app"
    
    # Create manifest
    cat > "$app_dir/app/manifest.json" << EOF
{
  "id": "com.$app_name.cloudron",
  "title": "$app_name",
  "version": "1.0.0",
  "description": "Auto-generated Cloudron package for $app_name",
  "developer": {
    "name": "TSYSDevStack Team",
    "email": "support@tsysdevstack.com"
  },
  "tags": ["productivity", "web-app"],
  "httpPort": 8080,
  "manifestVersion": 2,
  "healthCheck": {
    "path": "/",
    "port": 8080
  }
}
EOF
    
    # Create Dockerfile based on type
    case "$app_type" in
        "nodejs")
            cat > "$app_dir/app/Dockerfile" << 'EOF'
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production && npm cache clean --force
COPY . .
EXPOSE 8080
CMD ["npm", "start"]
EOF
            ;;
        "golang")
            cat > "$app_dir/app/Dockerfile" << 'EOF'
FROM golang:1.21-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download && go mod verify
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o main .
FROM alpine:latest
RUN apk --no-cache add ca-certificates tzdata
WORKDIR /root/
COPY --from=builder /app/main .
RUN chmod +x main
EXPOSE 8080
CMD ["./main"]
EOF
            ;;
        "python")
            cat > "$app_dir/app/Dockerfile" << 'EOF'
FROM python:3.11-alpine
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
EXPOSE 8080
CMD ["python", "app.py"]
EOF
            ;;
        *)
            cat > "$app_dir/app/Dockerfile" << 'EOF'
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /app
COPY . .
EXPOSE 8080
CMD ["./start.sh"]
EOF
            ;;
    esac
    
    # Create start script for unknown types
    if [ "$app_type" = "unknown" ]; then
        cat > "$app_dir/app/start.sh" << 'EOF'
#!/bin/sh
echo "Starting application..."
# Add your startup command here
exec "$@"
EOF
        chmod +x "$app_dir/app/start.sh"
    fi
    
    # Commit changes
    cd "$app_dir"
    git add app/ 2>/dev/null || true
    if ! git diff --staged --quiet; then
        git config user.email "support@tsysdevstack.com"
        git config user.name "TSYSDevStack Team"
        git commit -m "Add Cloudron package for $app_name

Type: $app_type
Generated: $(date)
"
        log_success "Committed Cloudron package for $app_name"
    else
        log_warning "No changes to commit for $app_name"
    fi
    
    # Update status
    echo "$(date '+%Y-%m-%d %H:%M:%S')|$app_name|completed|$app_type" >> "$ARTIFACTS_DIR/processing_status.log"
    
    log_success "Completed $app_name ($app_type)"
}

# Export function for parallel execution
export -f process_app
export -f log_info
export -f log_success
export -f log_warning
export -f log_error

# Main processing
main() {
    log_info "Starting parallel processing of applications"
    
    # Create artifacts directory
    mkdir -p "$ARTIFACTS_DIR"
    
    # Initialize status log
    echo "timestamp|app_name|status|app_type" > "$ARTIFACTS_DIR/processing_status.log"
    
    # Find all application directories
    local apps=()
    for dir in "$WORKSPACE_DIR"/*; do
        if [ -d "$dir" ] && [ "$(basename "$dir")" != "goalert" ]; then  # Skip goalert as it's already done
            apps+=("$dir")
        fi
    done
    
    log_info "Found ${#apps[@]} applications to process"
    
    # Process apps in parallel batches
    local batch_size=$MAX_PARALLEL
    local total=${#apps[@]}
    local processed=0
    
    for (( i=0; i<total; i+=batch_size )); do
        batch=()
        for (( j=i; j<i+batch_size && j<total; j++ )); do
            batch+=("${apps[$j]}")
        done
        
        log_info "Processing batch $((i/batch_size + 1)): ${#batch[@]} applications"
        
        # Process batch in parallel
        printf '%s\n' "${batch[@]}" | xargs -P "$batch_size" -I {} bash -c 'process_app "$@"' _ {}
        
        processed=$((processed + ${#batch[@]}))
        log_info "Progress: $processed/$total applications processed"
    done
    
    log_success "All applications processed successfully!"
    
    # Show summary
    echo ""
    log_info "Processing Summary:"
    awk -F'|' '$3=="completed" {print "✓ " $2 " (" $4 ")"}' "$ARTIFACTS_DIR/processing_status.log" | head -20
    
    if [ $(awk -F'|' '$3=="completed"' "$ARTIFACTS_DIR/processing_status.log" | wc -l) -gt 20 ]; then
        echo "... and $(($(awk -F'|' '$3=="completed"' "$ARTIFACTS_DIR/processing_status.log" | wc -l) - 20)) more"
    fi
}

# Run main function
main "$@"