# Define argument for linker flags
ARG LDFLAGS=-s -w

# Use Bun container for building the React UI
FROM oven/bun:1 as ui-builder

# Set the working directory for the React UI
WORKDIR /app

# Copy package.json and bun.lockb (if exists)
COPY webui/react-ui/package.json webui/react-ui/bun.lockb* ./

# Install dependencies
RUN bun install --frozen-lockfile

# Copy the rest of the React UI source code
COPY webui/react-ui/ ./

# Build the React UI
RUN bun run build

# Use a temporary build image based on Golang 1.22-alpine
FROM golang:1.22-alpine as builder

# Set environment variables: linker flags and disable CGO
ENV LDFLAGS=$LDFLAGS CGO_ENABLED=0

# Install git
RUN apk add --no-cache git
RUN rm -rf /tmp/* /var/cache/apk/*

# Set the working directory
WORKDIR /work

# Copy go.mod and go.sum files first to leverage Docker cache
COPY go.mod go.sum ./

# Download dependencies - this layer will be cached as long as go.mod and go.sum don't change
RUN go mod download

# Now copy the rest of the source code
COPY . .

# Copy the built React UI from the ui-builder stage
COPY --from=ui-builder /app/dist /work/webui/react-ui/dist

# Build the application
RUN go build -ldflags="$LDFLAGS" -o localagi ./

FROM scratch

# Copy the webui binary from the builder stage to the final image
COPY --from=builder /work/localagi /localagi
COPY --from=builder /etc/ssl/ /etc/ssl/
COPY --from=builder /tmp /tmp

# Define the command that will be run when the container is started
ENTRYPOINT ["/localagi"]