85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package ai
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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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"io"
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"net/http"
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)
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type geminiProvider struct {
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apiKey string
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model string
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client *http.Client
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}
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func newGemini(apiKey, model string) *geminiProvider {
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if model == "" {
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model = "gemini-2.0-flash"
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}
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return &geminiProvider{
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apiKey: apiKey,
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model: model,
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client: &http.Client{},
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}
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}
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func (p *geminiProvider) Name() string { return "gemini" }
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func (p *geminiProvider) Summarize(ctx context.Context, prompt string) (string, error) {
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url := fmt.Sprintf(
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"https://generativelanguage.googleapis.com/v1beta/models/%s:generateContent?key=%s",
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p.model, p.apiKey,
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)
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body := map[string]interface{}{
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"contents": []map[string]interface{}{
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{"parts": []map[string]string{{"text": prompt}}},
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},
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}
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b, _ := json.Marshal(body)
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(b))
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if err != nil {
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return "", err
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := p.client.Do(req)
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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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raw, _ := io.ReadAll(resp.Body)
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if resp.StatusCode != http.StatusOK {
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return "", fmt.Errorf("gemini API error %d: %s", resp.StatusCode, raw)
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}
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var result struct {
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Candidates []struct {
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Content struct {
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Parts []struct {
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Text string `json:"text"`
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} `json:"parts"`
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} `json:"content"`
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} `json:"candidates"`
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}
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if err := json.Unmarshal(raw, &result); err != nil {
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return "", err
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}
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if len(result.Candidates) == 0 || len(result.Candidates[0].Content.Parts) == 0 {
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return "", nil
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}
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return result.Candidates[0].Content.Parts[0].Text, nil
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}
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func (p *geminiProvider) ListModels(_ context.Context) ([]string, error) {
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return []string{
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"gemini-2.0-flash",
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"gemini-2.0-flash-lite",
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"gemini-1.5-pro",
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"gemini-1.5-flash",
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}, nil
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}
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