mirror of
https://gitcode.com/JianFeeeee/homeagent-sdk.git
synced 2026-09-20 08:58:03 +00:00
cd1984e26e
generateOpenAI 支持配置 base_url 指向 OpenAI 兼容网关（如本机 llmsproxy），为空保持官方直连。已实测经 llmsproxy→siliconflow (Kwai-Kolors/Kolors) 生图出有效 PNG。
358 lines
10 KiB
Go
358 lines
10 KiB
Go
package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"strconv"
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"strings"
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"time"
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sdk "gitcode.com/JianFeeeee/homeagent-sdk/sdk"
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)
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type Plugin struct {
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name string
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sdk *sdk.PluginSDK
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client *http.Client
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apiKey string
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provider string
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model string
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size string
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baseURL string
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}
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func NewPluginFactory(name string, config map[string]interface{}) (sdk.Plugin, error) {
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return &Plugin{name: name}, nil
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}
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func (p *Plugin) Name() string { return p.name }
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func getSetting[T string | int64 | float64](s sdk.SettingsAPI, key string, def T) T {
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v, err := s.Get(key)
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if err != nil || v == nil {
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return def
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}
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switch any(def).(type) {
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case string:
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if sv, ok := v.(string); ok {
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return any(sv).(T)
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}
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case int64:
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switch n := v.(type) {
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case float64:
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return any(int64(n)).(T)
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case int64:
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return any(n).(T)
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case string:
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if i, err := strconv.ParseInt(n, 10, 64); err == nil {
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return any(i).(T)
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}
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}
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case float64:
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switch n := v.(type) {
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case float64:
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return any(n).(T)
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case int64:
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return any(float64(n)).(T)
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case string:
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if f, err := strconv.ParseFloat(n, 64); err == nil {
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return any(f).(T)
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}
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}
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}
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return def
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}
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func getArg[T string | int64 | float64](args map[string]interface{}, key string, def T) T {
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v, ok := args[key]
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if !ok || v == nil {
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return def
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}
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switch any(def).(type) {
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case string:
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if s, ok := v.(string); ok {
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return any(s).(T)
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}
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case int64:
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switch n := v.(type) {
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case float64:
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return any(int64(n)).(T)
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case int64:
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return any(n).(T)
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case string:
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if i, err := strconv.ParseInt(n, 10, 64); err == nil {
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return any(i).(T)
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}
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}
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case float64:
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switch n := v.(type) {
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case float64:
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return any(n).(T)
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case int64:
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return any(float64(n)).(T)
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case string:
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if f, err := strconv.ParseFloat(n, 64); err == nil {
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return any(f).(T)
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}
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}
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}
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return def
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}
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func (p *Plugin) Start(s *sdk.PluginSDK) error {
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s.SetAutoRestart(true)
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p.sdk = s
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p.client = &http.Client{Timeout: 120 * time.Second}
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s.Settings().RegisterDef(sdk.ConfigDef{
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Key: "api_key", Default: "", Type: "string",
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DisplayName: "API Key", Description: "OpenAI / Stable Diffusion API Key",
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Category: "ai_image", Secret: true,
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})
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s.Settings().RegisterDef(sdk.ConfigDef{
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Key: "base_url", Default: "", Type: "string",
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DisplayName: "Base URL", Description: "自定义 OpenAI 兼容网关地址（不带 /v1 尾缀，如 http://127.0.0.1:8081）；为空走官方 https://api.openai.com",
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Category: "ai_image",
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})
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s.Settings().RegisterDef(sdk.ConfigDef{
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Key: "provider", Default: "openai", Type: "string",
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DisplayName: "Provider", Description: "Image generation provider: openai / stability",
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Category: "ai_image",
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})
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s.Settings().RegisterDef(sdk.ConfigDef{
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Key: "model", Default: "dall-e-3", Type: "string",
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DisplayName: "Model", Description: "Model name (dall-e-3, sd-xl, etc.)",
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Category: "ai_image",
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})
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s.Settings().RegisterDef(sdk.ConfigDef{
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Key: "size", Default: "1024x1024", Type: "string",
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DisplayName: "Size", Description: "Default image size (1024x1024, 1024x1792, 1792x1024)",
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Category: "ai_image",
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})
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p.apiKey = getSetting(s.Settings(), "api_key", "")
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p.provider = getSetting(s.Settings(), "provider", "openai")
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p.model = getSetting(s.Settings(), "model", "dall-e-3")
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p.size = getSetting(s.Settings(), "size", "1024x1024")
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p.baseURL = strings.TrimRight(strings.TrimSpace(getSetting(s.Settings(), "base_url", "")), "/")
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tp := p.name + "_"
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s.RegisterTool(tp+"generate", sdk.ToolDef{
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Name: tp + "generate", Description: "Generate image from text prompt using AI. Returns image URL.",
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Parameters: map[string]interface{}{
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"type": "object",
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"properties": map[string]interface{}{
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"prompt": map[string]interface{}{"type": "string", "description": "Text description of the image to generate"},
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"size": map[string]interface{}{"type": "string", "description": "Image size (1024x1024, 1024x1792, 1792x1024), default from config"},
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"model": map[string]interface{}{"type": "string", "description": "Model override (dall-e-3, dall-e-2)"},
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"n": map[string]interface{}{"type": "integer", "description": "Number of images to generate (1-10), default 1"},
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},
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"required": []string{"prompt"},
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},
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}, p.handleGenerate)
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fmt.Printf("[%s] started (provider=%s, model=%s)\n", p.name, p.provider, p.model)
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return nil
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}
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func (p *Plugin) Stop() error {
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fmt.Printf("[%s] stopped\n", p.name)
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return nil
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}
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type openAIReq struct {
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Model string `json:"model"`
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Prompt string `json:"prompt"`
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N int `json:"n"`
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Size string `json:"size"`
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ResponseFormat string `json:"response_format"`
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}
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type openAIResp struct {
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Created int64 `json:"created"`
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Data []struct {
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RevisedPrompt string `json:"revised_prompt"`
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URL string `json:"url"`
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} `json:"data"`
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Error *struct {
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Message string `json:"message"`
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Type string `json:"type"`
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} `json:"error"`
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}
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func (p *Plugin) handleGenerate(args map[string]interface{}) (interface{}, error) {
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prompt := getArg(args, "prompt", "")
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if prompt == "" {
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return map[string]interface{}{"isError": true, "content": "prompt is required"}, nil
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}
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key := getSetting(p.sdk.Settings(), "api_key", p.apiKey)
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if key == "" {
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return map[string]interface{}{"isError": true, "content": "API key not configured. Set plugin.ai_image.api_key via CLI."}, nil
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}
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provider := getSetting(p.sdk.Settings(), "provider", p.provider)
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model := getArg(args, "model", getSetting(p.sdk.Settings(), "model", p.model))
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size := getArg(args, "size", getSetting(p.sdk.Settings(), "size", p.size))
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n := getArg(args, "n", int64(1))
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if n < 1 {
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n = 1
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}
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if n > 10 {
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n = 10
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}
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switch provider {
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case "openai":
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return p.generateOpenAI(prompt, model, size, int(n), key)
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case "stability":
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return p.generateStability(prompt, model, size, int(n), key)
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default:
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return map[string]interface{}{"isError": true, "content": "Unknown provider: " + provider + ". Supported: openai, stability"}, nil
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}
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}
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func (p *Plugin) generateOpenAI(prompt, model, size string, n int, apiKey string) (interface{}, error) {
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// 上游地址：base_url 非空时走自定义网关（如本机 llmsproxy），约定不带 /v1 尾缀；
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// 为空保持官方直连。兼容误配了 /v1 尾缀的情况（去重）。
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endpoint := "https://api.openai.com/v1/images/generations"
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if p.baseURL != "" {
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base := strings.TrimSuffix(p.baseURL, "/v1")
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endpoint = base + "/v1/images/generations"
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}
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body := openAIReq{
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Model: model,
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Prompt: prompt,
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N: n,
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Size: size,
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ResponseFormat: "url",
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}
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b, _ := json.Marshal(body)
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req, _ := http.NewRequest("POST", endpoint, bytes.NewReader(b))
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Authorization", "Bearer "+apiKey)
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resp, err := p.client.Do(req)
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if err != nil {
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return map[string]interface{}{"isError": true, "content": "Request failed: " + err.Error()}, nil
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}
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defer resp.Body.Close()
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respBody, _ := io.ReadAll(resp.Body)
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var result openAIResp
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if err := json.Unmarshal(respBody, &result); err != nil {
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return map[string]interface{}{"isError": true, "content": "Failed to parse response: " + err.Error()}, nil
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}
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if result.Error != nil {
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return map[string]interface{}{"isError": true, "content": "API error: " + result.Error.Message}, nil
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}
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if len(result.Data) == 0 {
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return map[string]interface{}{"isError": true, "content": "No images returned"}, nil
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}
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urls := make([]string, len(result.Data))
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for i, d := range result.Data {
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urls[i] = d.URL
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}
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return map[string]interface{}{
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"content": fmt.Sprintf("Generated %d image(s) with model %s:\n%s", len(urls), model, strings.Join(urls, "\n")),
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"images": urls,
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"prompt": prompt,
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"model": model,
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}, nil
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}
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type stabilityReq struct {
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TextPrompts []stabilityPrompt `json:"text_prompts"`
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Width int `json:"width"`
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Height int `json:"height"`
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Samples int `json:"samples"`
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}
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type stabilityPrompt struct {
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Text string `json:"text"`
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Weight float64 `json:"weight,omitempty"`
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}
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type stabilityArtifact struct {
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Base64 string `json:"base64"`
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Seed int `json:"seed"`
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}
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type stabilityResp struct {
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Artifacts []stabilityArtifact `json:"artifacts"`
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Message string `json:"message,omitempty"`
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}
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func (p *Plugin) generateStability(prompt, model, size string, n int, apiKey string) (interface{}, error) {
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width, height := 1024, 1024
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if parts := strings.Split(size, "x"); len(parts) == 2 {
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if w, err := strconv.Atoi(parts[0]); err == nil {
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width = w
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}
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if h, err := strconv.Atoi(parts[1]); err == nil {
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height = h
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}
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}
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body := stabilityReq{
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TextPrompts: []stabilityPrompt{{Text: prompt, Weight: 1.0}},
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Width: width,
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Height: height,
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Samples: n,
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}
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apiURL := "https://api.stability.ai/v1/generation/stable-diffusion-xl-1024-v1-0/text-to-image"
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b, _ := json.Marshal(body)
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req, _ := http.NewRequest("POST", apiURL, bytes.NewReader(b))
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Authorization", "Bearer "+apiKey)
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req.Header.Set("Accept", "application/json")
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resp, err := p.client.Do(req)
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if err != nil {
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return map[string]interface{}{"isError": true, "content": "Request failed: " + err.Error()}, nil
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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respBody, _ := io.ReadAll(resp.Body)
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return map[string]interface{}{"isError": true, "content": fmt.Sprintf("API error (status %d): %s", resp.StatusCode, string(respBody))}, nil
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}
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respBody, _ := io.ReadAll(resp.Body)
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var result stabilityResp
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if err := json.Unmarshal(respBody, &result); err != nil {
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return map[string]interface{}{"isError": true, "content": "Failed to parse response: " + err.Error()}, nil
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}
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if len(result.Artifacts) == 0 {
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msg := result.Message
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if msg == "" {
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msg = "No images returned"
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}
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return map[string]interface{}{"isError": true, "content": msg}, nil
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}
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urls := make([]string, len(result.Artifacts))
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for i, a := range result.Artifacts {
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urls[i] = "data:image/png;base64," + a.Base64
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}
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return map[string]interface{}{
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"content": fmt.Sprintf("Generated %d image(s) via Stability AI:\n%s", len(urls), strings.Join(urls, "\n")),
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"images": urls,
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"prompt": prompt,
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"model": model,
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}, nil
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}
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