# Multi-stage build for smaller final image
FROM golang:1.25-alpine AS builder

# Install build dependencies for CGO (required for SQLite)
RUN apk add --no-cache gcc musl-dev sqlite-dev

# Set working directory
WORKDIR /build

# Copy go mod files
COPY go.mod go.sum ./

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build the application with CGO enabled for SQLite
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o alpenqueue ./cmd/alpenqueue

# Final stage - minimal image
FROM alpine:latest

# Install runtime dependencies
RUN apk --no-cache add ca-certificates sqlite-libs

# Create non-root user
RUN addgroup -g 1001 -S alpenqueue && \
    adduser -u 1001 -S alpenqueue -G alpenqueue

# Set working directory
WORKDIR /app

# Copy binary from builder
COPY --from=builder /build/alpenqueue .

# Create directory for SQLite database
RUN mkdir -p /app/data && chown -R alpenqueue:alpenqueue /app

# Switch to non-root user
USER alpenqueue

# Expose port
EXPOSE 8080

# Volume for persistent data
VOLUME ["/app/data"]

# Run the application
CMD ["./alpenqueue"]