gitFlow/internal/ai/openai.go
dimitar b83a4baebd refactor: M1 — extract shared HTTP client from AI package
Pull the private `client`/`postJSON` from `internal/ai` into a standalone
`internal/httpclient` package so both the AI providers and the upcoming
webhook senders can share the same bounded-reader, timeout-guarded JSON
HTTP client without introducing a dependency cycle.

Changes:
- internal/httpclient: Client struct with PostJSON(ctx, url, headers,
  payload, out), functional options WithTimeout/WithTransport, a 4 MiB
  response cap, and a 60s default timeout
- internal/ai: three providers (OpenAI, Ollama, Anthropic) now embed an
  `*httpclient.Client` (field renamed from `client` to `http`); the old
  `client.go` is deleted
- All 11 test packages pass (ai tests are byte-for-byte unaffected)

This zero-behaviour refactor unblocks the webhook package distributed in
M5, which needs the exact same JSON-post-and-decode helper.
2026-08-02 09:04:12 +02:00

89 lines
2.4 KiB
Go

package ai
import (
"context"
"fmt"
"gitea.oblak.solutions/dimitar/gitFlow/internal/config"
"gitea.oblak.solutions/dimitar/gitFlow/internal/httpclient"
"gitea.oblak.solutions/dimitar/gitFlow/pkg/status"
)
const defaultOpenAIBaseURL = "https://api.openai.com/v1"
// OpenAIProvider talks to the OpenAI Chat Completions API.
type OpenAIProvider struct {
model string
baseURL string
apiKey string
http *httpclient.Client
}
// NewOpenAI builds an OpenAI provider. base_url and model fall back to
// sensible defaults when unset in the configuration.
func NewOpenAI(cfg config.AIConfig, apiKey string) *OpenAIProvider {
baseURL := cfg.BaseURL
if baseURL == "" {
baseURL = defaultOpenAIBaseURL
}
model := cfg.Model
if model == "" {
model = "gpt-4o"
}
return &OpenAIProvider{model: model, baseURL: baseURL, apiKey: apiKey, http: httpclient.New()}
}
// Name implements Provider.
func (p *OpenAIProvider) Name() string { return "openai" }
// chatMessage is a single chat turn, shared with the other providers.
type chatMessage struct {
Role string `json:"role"`
Content string `json:"content"`
}
type chatRequest struct {
Model string `json:"model"`
Messages []chatMessage `json:"messages"`
ResponseFormat *responseFormat `json:"response_format,omitempty"`
}
type responseFormat struct {
Type string `json:"type"` // "json_object"
}
type chatResponse struct {
Choices []struct {
Message chatMessage `json:"message"`
} `json:"choices"`
Error *struct {
Message string `json:"message"`
} `json:"error"`
}
// Suggest implements Provider.
func (p *OpenAIProvider) Suggest(ctx context.Context, result status.ScanResult) ([]Suggestion, error) {
req := chatRequest{
Model: p.model,
Messages: []chatMessage{
{Role: "system", Content: "You are gitflow, a concise Git repository health assistant. You reply with JSON only."},
{Role: "user", Content: BuildPrompt(result)},
},
ResponseFormat: &responseFormat{Type: "json_object"},
}
var resp chatResponse
err := p.http.PostJSON(ctx, p.baseURL+"/chat/completions",
map[string]string{"Authorization": "Bearer " + p.apiKey}, req, &resp)
if err != nil {
return nil, err
}
if resp.Error != nil {
return nil, fmt.Errorf("ai: openai: %s", resp.Error.Message)
}
if len(resp.Choices) == 0 {
return nil, fmt.Errorf("ai: openai: empty response")
}
return parseSuggestions(resp.Choices[0].Message.Content)
}