mirror of
https://github.com/github/awesome-copilot.git
synced 2026-02-21 10:55:13 +00:00
112 lines
3.0 KiB
Go
112 lines
3.0 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"os"
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"strconv"
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"strings"
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copilot "github.com/github/copilot-sdk/go"
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)
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// Ralph loop: autonomous AI task loop with fresh context per iteration.
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//
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// Two modes:
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// - "plan": reads PROMPT_plan.md, generates/updates IMPLEMENTATION_PLAN.md
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// - "build": reads PROMPT_build.md, implements tasks, runs tests, commits
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//
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// Each iteration creates a fresh session so the agent always operates in
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// the "smart zone" of its context window. State is shared between
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// iterations via files on disk (IMPLEMENTATION_PLAN.md, AGENTS.md, specs/*).
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//
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// Usage:
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// go run ralph-loop.go # build mode, 50 iterations
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// go run ralph-loop.go plan # planning mode
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// go run ralph-loop.go 20 # build mode, 20 iterations
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// go run ralph-loop.go plan 5 # planning mode, 5 iterations
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func ralphLoop(ctx context.Context, mode string, maxIterations int) error {
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promptFile := "PROMPT_build.md"
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if mode == "plan" {
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promptFile = "PROMPT_plan.md"
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}
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client := copilot.NewClient(nil)
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if err := client.Start(ctx); err != nil {
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return fmt.Errorf("failed to start client: %w", err)
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}
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defer client.Stop()
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cwd, err := os.Getwd()
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if err != nil {
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return fmt.Errorf("failed to get working directory: %w", err)
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}
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fmt.Println(strings.Repeat("━", 40))
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fmt.Printf("Mode: %s\n", mode)
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fmt.Printf("Prompt: %s\n", promptFile)
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fmt.Printf("Max: %d iterations\n", maxIterations)
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fmt.Println(strings.Repeat("━", 40))
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prompt, err := os.ReadFile(promptFile)
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if err != nil {
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return fmt.Errorf("failed to read %s: %w", promptFile, err)
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}
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for i := 1; i <= maxIterations; i++ {
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fmt.Printf("\n=== Iteration %d/%d ===\n", i, maxIterations)
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session, err := client.CreateSession(ctx, &copilot.SessionConfig{
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Model: "gpt-5.1-codex-mini",
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WorkingDirectory: cwd,
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OnPermissionRequest: func(_ copilot.PermissionRequest, _ map[string]string) copilot.PermissionRequestResult {
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return copilot.PermissionRequestResult{Kind: "approved"}
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},
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})
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if err != nil {
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return fmt.Errorf("failed to create session: %w", err)
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}
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// Log tool usage for visibility
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session.On(func(event copilot.Event) {
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if toolExecution, ok := event.(copilot.ToolExecutionStartEvent); ok {
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fmt.Printf(" ⚙ %s\n", toolExecution.Data.ToolName)
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}
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})
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_, err = session.SendAndWait(ctx, copilot.MessageOptions{
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Prompt: string(prompt),
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})
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if destroyErr := session.Destroy(); destroyErr != nil {
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log.Printf("failed to destroy session on iteration %d: %v", i, destroyErr)
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}
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if err != nil {
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return fmt.Errorf("send failed on iteration %d: %w", i, err)
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}
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fmt.Printf("\nIteration %d complete.\n", i)
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}
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fmt.Printf("\nReached max iterations: %d\n", maxIterations)
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return nil
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}
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func main() {
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mode := "build"
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maxIterations := 50
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for _, arg := range os.Args[1:] {
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if arg == "plan" {
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mode = "plan"
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} else if n, err := strconv.Atoi(arg); err == nil {
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maxIterations = n
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}
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}
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if err := ralphLoop(context.Background(), mode, maxIterations); err != nil {
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log.Fatal(err)
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}
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}
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