# Stage 1: Build the Flutter web client
FROM bluefireteam/flutter:3.22.2 as flutter_builder
WORKDIR /app

# Copy Flutter project files
COPY AINoval/pubspec.yaml AINoval/pubspec.lock ./AINoval/
RUN cd AINoval && flutter pub get

# Copy the rest of the Flutter project source code
COPY AINoval/ ./AINoval/

# Build the Flutter web application
RUN cd AINoval && flutter build web --release --web-renderer canvaskit

# Stage 2: Build the Java Spring Boot server
FROM maven:3.9-eclipse-temurin-21 as java_builder
WORKDIR /app

# Copy only the pom.xml to leverage Docker cache for dependencies
COPY AINovalServer/pom.xml ./AINovalServer/
RUN mvn -f AINovalServer/pom.xml dependency:go-offline

# Copy the rest of the server source code
COPY AINovalServer/ ./AINovalServer/

# Build the application, skipping tests to speed up the process
RUN mvn -f AINovalServer/pom.xml clean package -DskipTests

# Stage 3: Create the final runtime image
FROM eclipse-temurin:21-jre

ENV TZ=Asia/Shanghai \
    LANG=C.UTF-8 \
    LC_ALL=C.UTF-8 \
    SPRING_PROFILES_ACTIVE=prod \
    JVM_XMS=512m \
    JVM_XMX=512m

# Fix JDK 21 reflective access for BigDecimal in Spring Data Mongo
ENV JAVA_TOOL_OPTIONS="--add-opens=java.base/java.math=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.time=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED"

WORKDIR /app

# Copy the server jar from the java_builder stage and rename it
COPY --from=java_builder /app/AINovalServer/target/ai-novel-server-0.0.1-SNAPSHOT.jar /app/ainoval-server.jar

# Copy the built web assets from the flutter_builder stage
COPY --from=flutter_builder /app/AINoval/build/web/ /app/web/

EXPOSE 18080

# Serve the prebuilt web from filesystem via Spring static locations
CMD sh -c "java -Xms${JVM_XMS} -Xmx${JVM_XMX} -Dfile.encoding=UTF-8 -Dspring.web.resources.static-locations=file:/app/web/ -jar /app/ainoval-server.jar"