97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
package openrouter
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"time"
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)
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type OpenRouterProvider struct {
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// Endpoint string
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Token string
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Model string // "openai/gpt-oss-20b:free"
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}
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type Message struct {
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Role string `json:"role"` // "system" | "user" | "assistant"
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Content string `json:"content"`
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}
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type ChatCompletionRequest struct {
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Model string `json:"model"`
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Messages []Message `json:"messages"`
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Temperature *float64 `json:"temperature,omitempty"`
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MaxTokens *int `json:"max_tokens,omitempty"`
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TopP *float64 `json:"top_p,omitempty"`
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Stop json.RawMessage `json:"stop,omitempty"` // string or []string; keep flexible
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Provider struct {
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Sort string `json:"sort,omitempty"`
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} `json:"provider,omitempty"`
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}
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type ChatCompletionResponse struct {
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ID string `json:"id"`
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Choices []struct {
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Index int `json:"index"`
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Message struct {
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Role string `json:"role"`
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Content string `json:"content"`
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} `json:"message"`
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FinishReason string `json:"finish_reason"`
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} `json:"choices"`
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}
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func (p OpenRouterProvider) Complete(ctx context.Context, prompt string) (string, error) {
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req := ChatCompletionRequest{
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Model: p.Model,
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Messages: []Message{
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{
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Role: "user",
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Content: prompt,
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},
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},
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Provider: struct {
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Sort string `json:"sort,omitempty"`
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}{
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Sort: "throughput",
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},
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}
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httpClient := http.Client{Timeout: 10 * time.Second}
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body, err := json.Marshal(req)
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if err != nil {
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return "", err
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}
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httpReq, err := http.NewRequestWithContext(ctx, "POST", "https://openrouter.ai/api/v1/chat/completions", bytes.NewReader(body))
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if err != nil {
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return "", err
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}
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httpReq.Header.Set("Authorization", fmt.Sprintf("Bearer %v", p.Token))
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httpReq.Header.Set("Content-Type", "application/json")
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resp, err := httpClient.Do(httpReq)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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// You may want to decode OpenRouter's error JSON here for better messages
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return "", fmt.Errorf("openrouter status %d", resp.StatusCode)
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}
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var out ChatCompletionResponse
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if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
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log.Println(err)
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log.Println(out)
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return "", err
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}
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return out.Choices[0].Message.Content, nil
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}
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