vision/js_export.go

package vision

import (
	"context"

	"apigo.cc/go/file"
	"apigo.cc/go/jsmod"
)

func init() {
	jsmod.Register("vision", map[string]any{
		// 基础操作
		"Load": func(ctx context.Context, path string) (*jsCanvas, error) {
			p, err := file.VerifyPathForSafeMode(ctx, path)
			if err != nil {
				return nil, err
			}
			c, err := Load(p)
			if err != nil {
				return nil, err
			}
			return &jsCanvas{ctx: ctx, c: c}, nil
		},
		"New": func(ctx context.Context, w, h int, bg *string) *jsCanvas {
			if bg != nil {
				return &jsCanvas{ctx: ctx, c: New(w, h, *bg)}
			}
			return &jsCanvas{ctx: ctx, c: New(w, h)}
		},
		"Save": func(ctx context.Context, j *jsCanvas, path string, quality *int) error {
			p, err := file.VerifyPathForSafeMode(ctx, path)
			if err != nil {
				return err
			}
			if quality != nil {
				return Save(j.c, p, *quality)
			}
			return Save(j.c, p)
		},

		// 生成类
		"GenerateQRCode": func(ctx context.Context, content string, size int) (*jsCanvas, error) {
			c, err := GenerateQRCode(content, size)
			if err != nil {
				return nil, err
			}
			return &jsCanvas{ctx: ctx, c: c}, nil
		},
		"GenerateBarcode": func(ctx context.Context, content string, w, h int) (*jsCanvas, error) {
			c, err := GenerateBarcode(content, w, h)
			if err != nil {
				return nil, err
			}
			return &jsCanvas{ctx: ctx, c: c}, nil
		},
		"GenerateCaptcha": func(ctx context.Context, opt *CaptchaOption) *jsCanvas {
			return &jsCanvas{ctx: ctx, c: GenerateCaptcha(opt)}
		},

		// 预览类 (直接写文件)
		"GenerateImagePreview": func(ctx context.Context, src, out string, w, h int) error {
			pSrc, err := file.VerifyPathForSafeMode(ctx, src)
			if err != nil {
				return err
			}
			pOut, err := file.VerifyPathForSafeMode(ctx, out)
			if err != nil {
				return err
			}
			return GenerateImagePreview(pSrc, pOut, w, h)
		},
		"GenerateVideoPreview": func(ctx context.Context, src, out string, w, h int, interval *int) error {
			pSrc, err := file.VerifyPathForSafeMode(ctx, src)
			if err != nil {
				return err
			}
			pOut, err := file.VerifyPathForSafeMode(ctx, out)
			if err != nil {
				return err
			}
			if interval != nil {
				return GenerateVideoPreview(pSrc, pOut, w, h, *interval)
			}
			return GenerateVideoPreview(pSrc, pOut, w, h)
		},

		// 转换类
		"Convert": func(ctx context.Context, src, dst string, quality *int) error {
			pSrc, err := file.VerifyPathForSafeMode(ctx, src)
			if err != nil {
				return err
			}
			pDst, err := file.VerifyPathForSafeMode(ctx, dst)
			if err != nil {
				return err
			}
			if quality != nil {
				return Convert(pSrc, pDst, *quality)
			}
			return Convert(pSrc, pDst)
		},
		"Optimize": func(ctx context.Context, path string, maxWidth int, quality int) error {
			p, err := file.VerifyPathForSafeMode(ctx, path)
			if err != nil {
				return err
			}
			return Optimize(p, maxWidth, quality)
		},

		// 辅助工具
		"LoadFonts": LoadFonts,
		"Recognize": func(ctx context.Context, path string) (string, error) {
			p, err := file.VerifyPathForSafeMode(ctx, path)
			if err != nil {
				return "", err
			}
			return Recognize(p)
		},
	})
}

// jsCanvas 包装器，支持链式调用
type jsCanvas struct {
	ctx context.Context
	c   *Canvas
}

func (j *jsCanvas) Width() int  { return j.c.Width() }
func (j *jsCanvas) Height() int { return j.c.Height() }

func (j *jsCanvas) Save(path string, quality *int) error {
	p, err := file.VerifyPathForSafeMode(j.ctx, path)
	if err != nil {
		return err
	}
	if quality != nil {
		return Save(j.c, p, *quality)
	}
	return Save(j.c, p)
}

// 效果与绘图 (返回自身以支持链式)
func (j *jsCanvas) Resize(w, h int) *jsCanvas         { j.c.Resize(w, h); return j }
func (j *jsCanvas) Blur(sigma float64) *jsCanvas      { j.c.Blur(sigma); return j }
func (j *jsCanvas) Grayscale() *jsCanvas              { j.c.Grayscale(); return j }
func (j *jsCanvas) Invert() *jsCanvas                 { j.c.Invert(); return j }
func (j *jsCanvas) Rotate(angle float64) *jsCanvas    { j.c.Rotate(angle); return j }
func (j *jsCanvas) FlipH() *jsCanvas                  { j.c.FlipH(); return j }
func (j *jsCanvas) FlipV() *jsCanvas                  { j.c.FlipV(); return j }
func (j *jsCanvas) Sharpen(sigma float64) *jsCanvas   { j.c.Sharpen(sigma); return j }
func (j *jsCanvas) AdjustBrightness(p float64) *jsCanvas { j.c.AdjustBrightness(p); return j }

func (j *jsCanvas) Rect(x, y, w, h float64, opt *DrawStyle) *jsCanvas { j.c.Rect(x, y, w, h, opt); return j }
func (j *jsCanvas) Circle(x, y, r float64, opt *DrawStyle) *jsCanvas  { j.c.Circle(x, y, r, opt); return j }
func (j *jsCanvas) Line(x1, y1, x2, y2 float64, opt *DrawStyle) *jsCanvas {
	j.c.Line(x1, y1, x2, y2, opt)
	return j
}
func (j *jsCanvas) DrawText(x, y float64, text string, opt *TextOption) *jsCanvas {
	j.c.DrawText(x, y, text, opt)
	return j
}

// 识别类
func (j *jsCanvas) DecodeAll() (string, error)    { return j.c.DecodeAll() }
func (j *jsCanvas) Recognize() (string, error)    { return j.c.Recognize() }
func (j *jsCanvas) DecodeQRCode() (string, error) { return j.c.DecodeQRCode() }