A:增加govips的调用

src/rear/.idea/rear.iml

@@ -2,7 +2,11 @@
 <module type="WEB_MODULE" version="4">
   <component name="Go" enabled="true" />
   <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.claude" />
+      <excludeFolder url="file://$MODULE_DIR$/.github" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea" />
+    </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>

src/rear/AGENTS.md

@@ -0,0 +1,42 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+- Root Go service is in `./` with `main.go`, `go.mod`, and `config.yaml`.
+- Core backend lives in `internal/` (API, handlers, services, repositories, workflows, utilities).
+- Reusable libraries are in `pkg/` (logging, SSE, system utilities, image helpers).
+- HTTP request examples live in `tests/` (`*.http`) and complement Go tests.
+- Supporting assets and tools: `tools/` (external binaries), `scripts/` (build), `db/`, `logs/`, `examples/`, `doc/`.
+
+## Build, Test, and Development Commands
+- Install deps: `go mod download`.
+- Run in dev: `go run main.go` (uses `config.yaml`).
+- Build local binary: `go build -o rear.exe .`.
+- Cross-platform build: `bash scripts/build.sh` (from `rear/`, requires Bash and Go).
+- Run tests: `go test ./...` (unit/integration), plus manual API checks via `.http` files in `tests/`.
+
+## Coding Style & Naming Conventions
+- Language: Go 1.24, format all code with `gofmt`/editor-on-save (`go fmt ./...` before committing).
+- Package names: short, lowercase (`filesystem`, `logger`, `sse`); files use `snake_case.go`.
+- Types and exported functions: `PascalCase`; locals and unexported symbols: `camelCase`.
+- Keep handlers thin, push business logic into `internal/service` and persistence into `internal/repositories`.
+
+## Testing Guidelines
+- Add/maintain Go tests under the same package with `*_test.go` suffix (`go test ./pkg/...` for focused runs).
+- Mirror new behavior with table-driven tests where practical.
+- Prefer deterministic tests; avoid relying on real external tools or network when possible.
+- Use `.http` files in `tests/` to document and validate API flows when endpoints change.
+
+## Commit & Pull Request Guidelines
+- Follow conventional commits: `feat(scope): summary`, `fix(scope): summary`, `chore(scope): summary`, `docs(scope): summary`, etc. Scopes like `sse`, `filesystem`, `repo`, `tests`.
+- Use present-tense, concise messages; keep one logical change per commit.
+- PRs should include: brief description, motivation/context, checklist of changes, how to test (commands and sample requests), and screenshots or log snippets when relevant.
+
+## Security & Configuration Tips
+- Never commit real credentials or private file paths; use `config.yaml.example` as the template and keep local `config.yaml` environment-specific.
+- Treat `tools/` binaries as build/runtime dependencies; do not modify or repackage them without confirming licenses and platform impact.
+- When introducing new external tools or ports, document them in `README.md` and `doc/` and ensure they are configurable via `config.yaml`.
+
+## Agent-Specific Instructions
+- Keep changes minimal and scoped; prefer extending existing modules under `internal/` or `pkg/` instead of creating new top-level directories.
+- Do not introduce new Go dependencies unless necessary; if added, group them logically in `go.mod` and explain the rationale in the PR description.
+- When modifying behavior, update or add tests in the nearest relevant package and, if API-visible, adjust `.http` examples in `tests/`.

src/rear/internal/api/img_api.go

@@ -3,8 +3,6 @@ package api
 import (
 	"context"
 	"fmt"
-	"github.com/h2non/filetype"
-	"go.uber.org/zap"
 	"os"
 	"path/filepath"
 	"rear/internal/config"
@@ -15,6 +13,9 @@ import (
 	"rear/pkg/utils"
 	"strconv"
 	"strings"
+
+	"github.com/h2non/filetype"
+	"go.uber.org/zap"
 )
 
 type ImageAPI struct {

src/rear/internal/utils/tools/libvips_govips_tool.go

@@ -0,0 +1,180 @@
+//go:build linux || darwin
+
+package tools
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"rear/internal/consts"
+	"sync"
+
+	vips "github.com/davidbyttow/govips/v2/vips"
+)
+
+var (
+	goVipsInitOnce sync.Once
+	goVipsInitErr  error
+)
+
+// ensureGoVipsInitialized 确保 govips 已初始化（仅在 Linux/macOS 下编译）
+func ensureGoVipsInitialized() error {
+	goVipsInitOnce.Do(func() {
+		// 使用默认配置启动 govips，具体配置可在以后按需扩展
+		goVipsInitErr = vips.Startup(nil)
+	})
+	return goVipsInitErr
+}
+
+// IsGoVipsAvailable 检查 govips 是否可用（是否能够成功初始化）
+func IsGoVipsAvailable() bool {
+	return ensureGoVipsInitialized() == nil
+}
+
+// ConvertVipsImageWithGoVips 使用 govips 进行格式转换
+// 签名与 ConvertVipsImage 基本一致，方便在调用侧切换实现。
+func ConvertVipsImageWithGoVips(ctx context.Context, inputPath, outputPath string, format consts.ImageFormat, options *VipsConvertOptions) error {
+	if err := ensureGoVipsInitialized(); err != nil {
+		return fmt.Errorf("govips 初始化失败: %w", err)
+	}
+
+	if options == nil {
+		options = &VipsConvertOptions{Quality: 85}
+	}
+
+	image, err := vips.NewImageFromFile(inputPath)
+	if err != nil {
+		return fmt.Errorf("govips 加载图片失败: %w", err)
+	}
+	defer image.Close()
+
+	var (
+		data []byte
+	)
+
+	switch format {
+	case consts.FormatJPG:
+		params := vips.JpegExportParams{
+			Quality:       options.Quality,
+			StripMetadata: options.StripMeta,
+			Interlace:     options.Progressive,
+		}
+		data, _, err = image.ExportJpeg(&params)
+	case consts.FormatPNG:
+		compression := 0
+		if options.Quality > 0 {
+			// 与 CLI 方式保持一致，将 1-100 映射到 0-9 压缩级别
+			compression = 9 - (options.Quality-1)*9/99
+		}
+		params := vips.PngExportParams{
+			Compression:   compression,
+			StripMetadata: options.StripMeta,
+		}
+		data, _, err = image.ExportPng(&params)
+	case consts.FormatWEBP:
+		params := vips.WebpExportParams{
+			Quality:       options.Quality,
+			Lossless:      options.Lossless,
+			StripMetadata: options.StripMeta,
+		}
+		data, _, err = image.ExportWebp(&params)
+	default:
+		return fmt.Errorf("unsupported format for govips: %s", format)
+	}
+
+	if err != nil {
+		return fmt.Errorf("govips 导出图片失败: %w", err)
+	}
+
+	if err := os.WriteFile(outputPath, data, 0o644); err != nil {
+		return fmt.Errorf("写出图片失败: %w", err)
+	}
+
+	return nil
+}
+
+// CompressVipsImageWithGoVips 使用 govips 进行综合压缩（缩放 + 去元数据 + 质量控制 + 格式转换）
+// 行为尽可能与 CompressVipsImage 保持一致，但采用 libvips C 接口而非 CLI。
+func CompressVipsImageWithGoVips(ctx context.Context, inputPath, outputPath string,
+	targetFormat consts.ImageFormat, targetWidth, targetHeight, quality int) error {
+
+	if err := ensureGoVipsInitialized(); err != nil {
+		return fmt.Errorf("govips 初始化失败: %w", err)
+	}
+
+	if targetWidth <= 0 || targetHeight <= 0 {
+		return fmt.Errorf("invalid target dimensions: width and height must be positive")
+	}
+	if quality < 1 || quality > 100 {
+		return fmt.Errorf("invalid quality: must be between 1 and 100")
+	}
+
+	image, err := vips.NewImageFromFile(inputPath)
+	if err != nil {
+		return fmt.Errorf("govips 加载图片失败: %w", err)
+	}
+	defer image.Close()
+
+	// 计算缩放比例（保持宽高比，且不放大）
+	width := image.Width()
+	height := image.Height()
+	if width <= 0 || height <= 0 {
+		return fmt.Errorf("invalid source dimensions: %dx%d", width, height)
+	}
+
+	scaleX := float64(targetWidth) / float64(width)
+	scaleY := float64(targetHeight) / float64(height)
+	scale := scaleX
+	if scaleY < scaleX {
+		scale = scaleY
+	}
+	if scale <= 0 {
+		return fmt.Errorf("invalid resize scale computed: %f", scale)
+	}
+	if scale > 1.0 {
+		scale = 1.0
+	}
+
+	if err := image.Resize(scale, vips.KernelLanczos3); err != nil {
+		return fmt.Errorf("govips 缩放图片失败: %w", err)
+	}
+
+	// 导出为目标格式
+	var data []byte
+
+	switch targetFormat {
+	case consts.FormatJPG:
+		params := vips.JpegExportParams{
+			Quality:       quality,
+			StripMetadata: true,
+			Interlace:     false,
+		}
+		data, _, err = image.ExportJpeg(&params)
+	case consts.FormatPNG:
+		compression := 9 - (quality-1)*9/99
+		params := vips.PngExportParams{
+			Compression:   compression,
+			StripMetadata: true,
+		}
+		data, _, err = image.ExportPng(&params)
+	case consts.FormatWEBP:
+		params := vips.WebpExportParams{
+			Quality:       quality,
+			Lossless:      false,
+			StripMetadata: true,
+		}
+		data, _, err = image.ExportWebp(&params)
+	default:
+		return fmt.Errorf("unsupported target format for govips: %s", targetFormat)
+	}
+
+	if err != nil {
+		return fmt.Errorf("govips 导出压缩图片失败: %w", err)
+	}
+
+	if err := os.WriteFile(outputPath, data, 0o644); err != nil {
+		return fmt.Errorf("写出压缩图片失败: %w", err)
+	}
+
+	return nil
+}

src/rear/logs/app.log

@@ -154,3 +154,6 @@
 {"level":"info","time":"2025-10-06 17:28:15.373","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}
 {"level":"info","time":"2025-10-06 17:28:49.241","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}
 {"level":"info","time":"2025-10-06 17:38:05.412","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}
+{"level":"info","time":"2025-11-16 14:43:16.424","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}
+{"level":"info","time":"2025-11-16 17:26:19.223","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}
+{"level":"info","time":"2025-11-16 17:32:50.846","caller":"config/config.go:90","msg":"加载配置文件成功","path":"config.yaml"}