Files
2026-07-13 13:00:08 +08:00

96 lines
2.9 KiB
Go

package control
import (
"context"
"encoding/json"
"fmt"
"strings"
"reasonix/internal/event"
"reasonix/internal/nilutil"
"reasonix/internal/provider"
)
const autoPlanClassifierPrompt = `You classify whether a coding-agent user request should first enter read-only planning mode.
Return ONLY JSON: {"needs_plan":true|false,"reason":"short reason"}.
Use true for multi-step implementation, refactors, migrations, unclear cross-file work, PRD/spec/issue work, or tasks needing investigation before edits.
Use false for explanations, simple questions, single obvious edits, direct commands, or requests that should be answered without changing files.`
type ProviderAutoPlanClassifier struct {
prov provider.Provider
pricing *provider.Pricing
sink event.Sink
}
func NewProviderAutoPlanClassifier(prov provider.Provider) *ProviderAutoPlanClassifier {
if nilutil.IsNil(prov) {
return nil
}
return &ProviderAutoPlanClassifier{prov: prov}
}
func NewBillableProviderAutoPlanClassifier(prov provider.Provider, pricing *provider.Pricing, sink event.Sink) *ProviderAutoPlanClassifier {
if nilutil.IsNil(prov) {
return nil
}
if nilutil.IsNil(sink) {
sink = event.Discard
}
return &ProviderAutoPlanClassifier{prov: prov, pricing: pricing, sink: sink}
}
func (c *ProviderAutoPlanClassifier) NeedsPlan(ctx context.Context, input string, score int) (bool, string, error) {
if c == nil || nilutil.IsNil(c.prov) {
return false, "", fmt.Errorf("auto plan classifier is not initialized")
}
ch, err := c.prov.Stream(ctx, provider.Request{
Messages: []provider.Message{
{Role: provider.RoleSystem, Content: autoPlanClassifierPrompt},
{Role: provider.RoleUser, Content: fmt.Sprintf("heuristic_score=%d\n\nUSER_REQUEST:\n%s", score, input)},
},
Temperature: provider.TemperaturePtr(0),
MaxTokens: 80,
})
if err != nil {
return false, "", err
}
var text strings.Builder
var usage *provider.Usage
for chunk := range ch {
switch chunk.Type {
case provider.ChunkText:
text.WriteString(chunk.Text)
case provider.ChunkUsage:
usage = chunk.Usage
case provider.ChunkError:
return false, "", chunk.Err
}
}
if usage != nil && usage.TotalTokens > 0 && !nilutil.IsNil(c.sink) {
c.sink.Emit(event.Event{Kind: event.Usage, Usage: usage, Pricing: c.pricing, UsageSource: event.UsageSourceClassifier})
}
var out struct {
NeedsPlan *bool `json:"needs_plan"`
Reason string `json:"reason"`
}
if err := json.Unmarshal([]byte(extractJSONObject(text.String())), &out); err != nil {
return false, "", fmt.Errorf("decode classifier response: %w", err)
}
if out.NeedsPlan == nil {
return false, "", fmt.Errorf("decode classifier response: missing needs_plan")
}
return *out.NeedsPlan, strings.TrimSpace(out.Reason), nil
}
func extractJSONObject(s string) string {
s = strings.TrimSpace(s)
start := strings.IndexByte(s, '{')
end := strings.LastIndexByte(s, '}')
if start >= 0 && end >= start {
return s[start : end+1]
}
return s
}