# ============================================================
# 阶段1: 构建
# ============================================================
FROM golang:1.26-alpine AS builder

WORKDIR /app

RUN apk add --no-cache git make

COPY go.mod go.sum ./
RUN go mod download && go mod verify

COPY . .

# ✅ main.go 在根目录，直接构建 .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-s -w" \
    -o /app/sdk-generator \
    .

# ============================================================
# 阶段2: 运行
# ============================================================
FROM alpine:latest

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

ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

RUN adduser -D -g '' appuser

WORKDIR /app

COPY --from=builder /app/sdk-generator /app/sdk-generator
COPY --chown=appuser:appuser ./web /app/web

RUN mkdir -p /app/outputs /app/uploads && \
    chown -R appuser:appuser /app

USER appuser

EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1

ENTRYPOINT ["/app/sdk-generator"]