# Build stage
FROM golang:1.25-alpine AS builder

WORKDIR /app

# Install build dependencies
RUN apk add --no-cache git ca-certificates tzdata

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

# Copy source code
COPY . .

# Build the binary
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o zwift-monitor .

# Final stage
FROM alpine:latest

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

WORKDIR /app

# Copy binary from builder
COPY --from=builder /app/zwift-monitor .

# Create data directory
RUN mkdir -p /data/activities

# Run as non-root user
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
RUN chown -R appuser:appgroup /app /data
USER appuser

# Set default environment variables
ENV ZWIFT_OUTPUT_DIR=/data/activities \
    ZWIFT_STATE_FILE=/data/zwift-state.json \
    ZWIFT_TOKEN_CACHE=/data/.zwift-token.json \
    ZWIFT_POLL_INTERVAL=5m \
    ZWIFT_LOG_LEVEL=info \
    ZWIFT_RATE_LIMIT=5 \
    ZWIFT_MAX_RETRIES=3

# Expose volume for data
VOLUME ["/data"]

# Run the service
CMD ["/app/zwift-monitor"]