62 lines
2.0 KiB
Go
62 lines
2.0 KiB
Go
package main
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import (
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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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"strings"
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"sync"
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)
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const validProposal = `{"corrections":[{"id":1,"original_text":"hello world","corrected_text":"Hello, world.","confidence":0.95}]}`
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const validAssessment = `{"validations":[{"correction_index":0,"approved":true,"confidence":0.95,"reason":"Punctuation and capitalization only"}]}`
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// roundTripFunc exercises PromptKit's built-in HTTP path without any network.
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type roundTripFunc func(*http.Request) (*http.Response, error)
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func (f roundTripFunc) RoundTrip(r *http.Request) (*http.Response, error) { return f(r) }
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func providerResponse(status int, content string, usage any) *http.Response {
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body := map[string]any{"choices": []any{map[string]any{"message": map[string]any{"role": "assistant", "content": content}, "finish_reason": "stop"}}}
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if status != http.StatusOK {
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body = map[string]any{"error": map[string]any{"message": "synthetic temporary failure"}}
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}
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if usage != nil {
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body["usage"] = usage
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}
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data, _ := json.Marshal(body)
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return &http.Response{StatusCode: status, Header: make(http.Header), Body: io.NopCloser(strings.NewReader(string(data)))}
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}
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func demonstrationClient() *http.Client {
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var mu sync.Mutex
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calls := map[string]int{}
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return &http.Client{Transport: roundTripFunc(func(req *http.Request) (*http.Response, error) {
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if req.URL.Host != "offline.invalid" {
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return nil, fmt.Errorf("unexpected offline target")
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}
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var body struct {
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Model string `json:"model"`
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}
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if err := json.NewDecoder(req.Body).Decode(&body); err != nil {
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return nil, err
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}
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mu.Lock()
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calls[body.Model]++
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n := calls[body.Model]
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mu.Unlock()
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if n == 1 {
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return providerResponse(200, "not JSON", nil), nil
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}
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switch body.Model {
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case "synthetic-grammar":
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return providerResponse(200, validProposal, nil), nil
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case "synthetic-review":
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return providerResponse(200, validAssessment, nil), nil
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default:
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return nil, fmt.Errorf("unexpected synthetic model")
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}
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})}
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}
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