# =============================================================================
# Dockerfile.Downloader - Multi-stage build for NScrapy CLI (Downloader mode)
# =============================================================================
# Build stage: compile NScrapy.Cli with all dependencies
# Runtime stage: run with .NET 10.0 runtime
#
# Usage:
#   docker build -f Dockerfile.Downloader -t nscrapy-downloader .
#   docker run nscrapy-downloader run --role downloader
#
# Environment variables (override CLI args):
#   REDIS_HOST          - Redis host address
#   REDIS_PORT          - Redis port (default: 6379)
#   REDIS_PASSWORD      - Redis password
#   REDIS_USESSL        - Use SSL for Redis ("true" / "false")
#   NSCRAPY_REDIS_HOST  - Same as REDIS_HOST (preferred)
#   NSCRAPY_REDIS_PORT  - Same as REDIS_PORT (preferred)
# =============================================================================

# ---- 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.Cli/NScrapy.Cli.csproj        NScrapy.Cli/
COPY NScrapy.Core/NScrapy.Core.csproj      NScrapy.Core/
COPY NScrapy.Downloader/NScrapy.Downloader.csproj    NScrapy.Downloader/
COPY NScrapy.Infra/NScrapy.Infra.csproj     NScrapy.Infra/
COPY NScrapy.Scheduler/NScrapy.Scheduler.csproj  NScrapy.Scheduler/
COPY NScrapy.Engine/NScrapy.Engine.csproj  NScrapy.Engine/
COPY NScrapy.Spider/NScrapy.Spider.csproj    NScrapy.Spider/

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

# Copy source code
COPY NScrapy.Cli/              NScrapy.Cli/
COPY NScrapy.Core/             NScrapy.Core/
COPY NScrapy.Downloader/        NScrapy.Downloader/
COPY NScrapy.Infra/             NScrapy.Infra/
COPY NScrapy.Scheduler/        NScrapy.Scheduler/
COPY NScrapy.Engine/            NScrapy.Engine/
COPY NScrapy.Spider/           NScrapy.Spider/

# Build and publish CLI
WORKDIR /src/NScrapy.Cli
RUN dotnet publish -c Release --no-restore -o /app/publish -p:PublishSingleFile=false

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

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

# Copy log4net config
COPY NScrapy.Infra/log4net.config ./ 2>/dev/null || true

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

# Entry point: run the CLI in downloader mode
# Usage: docker run nscrapy-downloader run --role downloader
ENTRYPOINT ["nscrapy"]