# ===================================================================
# TopFans - Multi-stage Build for Go Services
# Stage 1: Build all services in parallel
# Stage 2: Create minimal runtime image for each service
# ===================================================================

# ---- Build Stage ----
FROM --platform=linux/amd64 golang:1.25-alpine AS builder

# Install build dependencies
RUN apk add --no-cache git make

# Set working directory
WORKDIR /build

# Copy go mod files first for better caching
COPY backend/go.mod backend/go.sum ./

# 配置 Go 模块代理，解决网络问题
RUN go env -w GOPROXY=https://goproxy.cn,https://mirrors.aliyun.com/go-proxy/,direct && \
    go env -w GOSUMDB=off && \
    go mod download

# Copy source code
COPY backend/ ./

# Build all services with optimization flags
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/gateway gateway/main.go && \
    echo "Built gateway" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/userservice services/userService/main.go && \
    echo "Built userservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/socialservice services/socialService/main.go && \
    echo "Built socialservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/assetservice services/assetService/main.go && \
    echo "Built assetservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/galleryservice services/galleryService/main.go && \
    echo "Built galleryservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/activityservice services/activityService/main.go && \
    echo "Built activityservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/taskservice services/taskService/main.go && \
    echo "Built taskservice" && \
    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" \
    -o /tmp/starbookservice services/starbookService/main.go && \
    echo "Built starbookservice"

# ---- Runtime Stage: Gateway ----
FROM --platform=linux/amd64 alpine:3.19 AS gateway

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/gateway /app/gateway

ENV GIN_MODE=release
EXPOSE 8080

HEALTHCHECK --interval=10s --timeout=5s --start-period=15s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1

ENTRYPOINT ["/app/gateway"]
CMD ["-port=8080"]

# ---- Runtime Stage: UserService ----
FROM --platform=linux/amd64 alpine:3.19 AS userservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/userservice /app/userservice

EXPOSE 20000

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:20000 || exit 1

ENTRYPOINT ["/app/userservice"]

# ---- Runtime Stage: SocialService ----
FROM --platform=linux/amd64 alpine:3.19 AS socialservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/socialservice /app/socialservice

EXPOSE 20002

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:20002 || exit 1

ENTRYPOINT ["/app/socialservice"]

# ---- Runtime Stage: AssetService ----
FROM --platform=linux/amd64 alpine:3.19 AS assetservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/assetservice /app/assetservice

EXPOSE 20003

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:20003 || exit 1

ENTRYPOINT ["/app/assetservice"]

# ---- Runtime Stage: GalleryService ----
FROM --platform=linux/amd64 alpine:3.19 AS galleryservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/galleryservice /app/galleryservice

EXPOSE 20004

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:20004 || exit 1

ENTRYPOINT ["/app/galleryservice"]

# ---- Runtime Stage: ActivityService ----
FROM --platform=linux/amd64 alpine:3.19 AS activityservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/activityservice /app/activityservice

EXPOSE 20005

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:20005 || exit 1

ENTRYPOINT ["/app/activityservice"]

# ---- Runtime Stage: TaskService ----
FROM --platform=linux/amd64 alpine:3.19 AS taskservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/taskservice /app/taskservice

EXPOSE 20006

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:21006 || exit 1

ENTRYPOINT ["/app/taskservice"]

# ---- Runtime Stage: StarbookService ----
FROM --platform=linux/amd64 alpine:3.19 AS starbookservice

RUN apk add --no-cache ca-certificates tzdata

WORKDIR /app
COPY --from=builder /tmp/starbookservice /app/starbookservice

EXPOSE 20007

HEALTHCHECK --interval=10s --timeout=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:21007 || exit 1

ENTRYPOINT ["/app/starbookservice"]