# Multi-stage build for Java 24
FROM openjdk:24-jdk-slim AS builder

# Install required packages
RUN apt-get update && apt-get install -y \
    curl \
    unzip \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy gradle wrapper and build files
COPY gradle/ gradle/
COPY gradlew .
COPY gradle.properties .
COPY settings.gradle.kts .
COPY build.gradle.kts .

# Make gradlew executable
RUN chmod +x gradlew

# Download dependencies (for better caching)
RUN ./gradlew dependencies --no-daemon

# Copy source code
COPY src/ src/

# Build the application
RUN ./gradlew shadowJar --no-daemon

# Runtime stage
FROM openjdk:24-jdk-slim

# Install required runtime packages
RUN apt-get update && apt-get install -y \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN groupadd -r ccoin && useradd -r -g ccoin ccoin

# Set working directory
WORKDIR /app

# Copy the built JAR from builder stage
COPY --from=builder /app/build/libs/*.jar app.jar

# Change ownership to app user
RUN chown -R ccoin:ccoin /app

# Switch to app user
USER ccoin

# Expose port
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8080/health || exit 1

# JVM options for production
ENV JAVA_OPTS="-Xmx512m -Xms256m -XX:+UseG1GC -XX:+UseStringDeduplication"

# Run the application
CMD ["sh", "-c", "java $JAVA_OPTS -jar app.jar"]