# ============================================
# Stage 1: Build Flutter Web Application
# ============================================
FROM ghcr.io/cirruslabs/flutter:stable AS builder

USER root

WORKDIR /app

# Safe directory configuration for git
RUN git config --global --add safe.directory /app

# Optimize DART VM Memory for build to prevent OOM
ENV DART_VM_OPTIONS="--old_gen_heap_size=2048"

# Enable web support (idempotent)
RUN flutter config --enable-web

# Copy dependency files first for better caching
# Note: pubspec.lock will be generated by flutter pub get if missing
COPY pubspec.yaml ./

# Get dependencies (generates pubspec.lock automatically)
RUN flutter pub get

# Copy source code
COPY . .

# Re-run pub get after copying source to ensure lockfile consistency
RUN flutter pub get

# Build web application (CanvasKit renderer is now default)
# Added --no-tree-shake-icons to prevent potential font issues in some environments
RUN flutter build web --release --base-href="/" --no-tree-shake-icons

# ============================================
# Stage 2: Serve with custom Dart server (with API proxy)
# ============================================
FROM dart:stable

WORKDIR /app

# Install SQLite3 library for FFI and FFmpeg for IPTV stream transcoding
RUN apt-get update && apt-get install -y sqlite3 libsqlite3-dev ffmpeg && rm -rf /var/lib/apt/lists/*

# Create directory for HLS stream output
RUN mkdir -p /tmp/streams && chmod 777 /tmp/streams

# Copy entire bin directory (API, database, etc.)
COPY bin/ ./bin/

# Get dependencies
RUN dart pub get --directory=bin

# Copy built web application from builder stage
COPY --from=builder /app/build/web /app/web

# Expose port (internal only, not mapped to host)
EXPOSE 8089

# Serve web application with API proxy
CMD ["dart", "run", "bin/server.dart", "--port", "8089", "--path", "/app/web"]