# =============================================================================
# Dockerfile.Downloader - Multi-stage build for NScrapy DownloaderShell
# =============================================================================
# Build stage: compile NScrapy.DownloaderShell (Executable)
# Runtime stage: run with .NET 10.0 runtime
#
# Usage:
#   docker build -f Dockerfile.Downloader -t nscrapy-downloader .
#   docker run nscrapy-downloader
#
# Environment variables (override appsettings.json):
#   REDIS_ENABLED       - Enable Redis ("true" / "false")
#   REDIS_HOST          - Redis host address
#   REDIS_PORT          - Redis port (default: 6379)
#   REDIS_PASSWORD      - Redis password
#   REDIS_USESSL        - Use SSL for Redis ("true" / "false")
# =============================================================================

# ---- Build Stage ----
FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
WORKDIR /src

# Copy solution and project files (layer caching optimisation)
COPY NScrapy.sln                         ./
COPY NScrapy.DownloaderShell/NScrapy.DownloaderShell.csproj  NScrapy.DownloaderShell/
COPY NScrapy.Downloader/NScrapy.Downloader.csproj    NScrapy.Downloader/
COPY NScrapy.Infra/NScrapy.Infra.csproj     NScrapy.Infra/
COPY NScrapy.Scheduler/NScrapy.Scheduler.csproj  NScrapy.Scheduler/

# Restore NuGet packages
RUN dotnet restore NScrapy.DownloaderShell/NScrapy.DownloaderShell.csproj

# Copy source code
COPY NScrapy.DownloaderShell/  NScrapy.DownloaderShell/
COPY NScrapy.Downloader/       NScrapy.Downloader/
COPY NScrapy.Infra/            NScrapy.Infra/
COPY NScrapy.Scheduler/         NScrapy.Scheduler/

# Build and publish
WORKDIR /src/NScrapy.DownloaderShell
RUN dotnet build -c Release --no-restore -o /app/build
RUN dotnet publish -c Release --no-build -o /app/publish

# ---- Runtime Stage ----
FROM mcr.microsoft.com/dotnet/runtime:10.0 AS runtime
WORKDIR /app

# Copy published output
COPY --from=build /app/publish .

# Copy log4net config
COPY NScrapy.DownloaderShell/log4net.config ./

# Environment defaults
ENV DOTNET_RUNNING_IN_CONTAINER=true
ENV REDIS_ENABLED=true
ENV REDIS_HOST=redis
ENV REDIS_PORT=6379

# Entry point: run the DownloaderShell executable
ENTRYPOINT ["dotnet", "NScrapy.DownloaderShell.dll"]