# =======================
# Builder stage
# =======================
FROM maven:3.8.5-eclipse-temurin-17 AS builder

WORKDIR /workdir/server

# Copy only pom.xml first for better layer caching
COPY pom.xml .

# Download dependencies with optimization flags
RUN mvn dependency:resolve dependency:resolve-plugins -B -T 1C

# Copy source code
COPY src ./src

# Build the application
RUN mvn package -B -T 1C -DskipTests -Dmaven.javadoc.skip=true

# Verify the JAR was created
RUN ls -la target/

# =======================
# Runtime stage
# =======================
FROM eclipse-temurin:17-jre-focal

# Expose port
EXPOSE 8080

# Create app and uploads directories
RUN mkdir -p /app && \
    mkdir -p /app/uploads && \
    chmod 755 /app/uploads

# Set working directory
WORKDIR /app

# Copy the JAR from builder stage
COPY --from=builder /workdir/server/target/*.jar /app/

# Create volume for uploads (optional but recommended)
VOLUME ["/app/uploads"]

# Entry point: dynamically run the first JAR in /app
ENTRYPOINT ["sh", "-c", "java -jar /app/$(ls /app | grep .jar | head -n1)"]