# Build stage
FROM golang:1.24-alpine AS builder

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

# Set working directory
WORKDIR /app

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

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build the application
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o server ./core/

# Final stage
FROM alpine:latest

# Install ca-certificates for HTTPS and sqlite for database
RUN apk --no-cache add ca-certificates sqlite

# Create app user for security
RUN adduser -D -s /bin/sh appuser

# Set working directory
WORKDIR /app

# Copy binary from builder stage
COPY --from=builder /app/server .

# Create data directory for SQLite
RUN mkdir -p /app/data && chown appuser:appuser /app/data

# Copy config sample (optional)
COPY config.json.sample .

# Change ownership to app user
RUN chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Expose port (default 8080, can be overridden with OA_PORT)
EXPOSE 8080

# Health check - requires Accept-Version header
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider --header="Accept-Version: v1" http://localhost:8080/ || exit 1

# Set default environment variables
ENV OA_DATABASE_DRIVER=sqlite \
    OA_DATABASE_FILE=/app/data/openaccounting.db \
    OA_ADDRESS=0.0.0.0 \
    OA_PORT=8080 \
    OA_API_PREFIX=/api/v1

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