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images.go
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/
images.go
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package img
import (
"bytes"
"context"
"encoding/base64"
"fmt"
"github.com/sashabaranov/go-openai"
"github.com/spf13/cobra"
"image/png"
"os"
"strings"
)
var Group = &cobra.Group{
ID: "img",
Title: "Image operations",
}
func init() {
Generate.Flags().String("out", "./out.png", "path to generated image file")
}
var Generate = &cobra.Command{
Use: "gen [prompt]",
GroupID: "img",
Short: "Generate image",
Long: `Generates image with Dall-E`,
Args: cobra.MinimumNArgs(1),
Run: func(cmd *cobra.Command, args []string) {
c := openai.NewClient(os.Getenv("OPENAI_API_KEY"))
ctx := context.Background()
prompt := strings.Join(args, " ")
request := openai.ImageRequest{
Model: openai.CreateImageModelDallE3,
Prompt: prompt,
Size: openai.CreateImageSize1024x1024,
ResponseFormat: openai.CreateImageResponseFormatB64JSON,
N: 1,
}
response, err := c.CreateImage(ctx, request)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "Image creation error: %v\n", err)
return
}
imgBytes, err := base64.StdEncoding.DecodeString(response.Data[0].B64JSON)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "Base64 decode error: %v\n", err)
return
}
r := bytes.NewReader(imgBytes)
imgData, err := png.Decode(r)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "PNG decode error: %v\n", err)
return
}
outPath, err := cmd.Flags().GetString("out")
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "invalid out flag: %v\n", err)
return
}
file, err := os.Create(outPath)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "File creation error: %v\n", err)
return
}
defer func(file *os.File) {
_ = file.Close()
}(file)
if err := png.Encode(file, imgData); err != nil {
_, _ = fmt.Fprintf(os.Stderr, "PNG encode error: %v\n", err)
return
}
fmt.Printf("The image was saved as %s\n", outPath)
},
}