# ============================================================
# AIOps Backend + Agent 多阶段 Dockerfile
# Stage 1: 编译后端 (Go 1.21)
# Stage 2: 交叉编译 Agent (Go 1.24, linux-amd64/arm64 + darwin-arm64)
# Stage 3: 运行时 (Alpine)
# 署名 Logan.Li
# ============================================================

# ==================== Stage 1: Backend Builder ====================
FROM golang:1.21-alpine AS builder

WORKDIR /app

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

ENV TZ=Asia/Shanghai
ENV GOPROXY=https://goproxy.cn,direct
ENV GOSUMDB=off

# 复制后端 go.mod（利用 Docker 层缓存）
COPY backend/go.mod backend/go.sum ./
RUN go mod download

# 复制后端源码
COPY backend/ ./

# 构建后端二进制
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-w -s" \
    -o ezops ./cmd/

# ==================== Stage 2: Agent Builder ====================
FROM golang:1.24-alpine AS agent-builder

WORKDIR /agent

ENV GOPROXY=https://goproxy.cn,direct
ENV GOSUMDB=off

# 复制 agent go.mod
COPY agent/go.mod agent/go.sum ./
RUN go mod download

# 复制 agent 源码
COPY agent/ ./

# 交叉编译三个平台的 agent 二进制
RUN CGO_ENABLED=0 GOOS=linux  GOARCH=amd64 go build -ldflags="-s -w" -o bin/aiops-agent-linux-amd64  . && \
    CGO_ENABLED=0 GOOS=linux  GOARCH=arm64 go build -ldflags="-s -w" -o bin/aiops-agent-linux-arm64  . && \
    CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="-s -w" -o bin/aiops-agent-darwin-arm64 .

# ==================== Stage 3: Runtime ====================
FROM alpine:latest

# 安装运行时依赖（curl=健康检查，openssh-client=SSH远程安装agent）
RUN apk --no-cache add ca-certificates tzdata curl openssh-client

ENV TZ=Asia/Shanghai

WORKDIR /app

# 复制后端二进制
COPY --from=builder /app/ezops .

# 创建运行时目录
RUN mkdir -p /app/logs /app/uploads /app/agent/bin /app/agent/deploy

# 复制 agent 二进制（三个平台）
COPY --from=agent-builder /agent/bin/aiops-agent-linux-amd64  /app/agent/bin/
COPY --from=agent-builder /agent/bin/aiops-agent-linux-arm64  /app/agent/bin/
COPY --from=agent-builder /agent/bin/aiops-agent-darwin-arm64 /app/agent/bin/

# 复制 agent 安装脚本和 systemd service 模板
COPY agent/deploy/install.sh          /app/agent/deploy/
COPY agent/deploy/aiops-agent.service /app/agent/deploy/

EXPOSE 8080

HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:8080/health || exit 1

CMD ["./ezops"]
