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package api
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"os/exec"
"strings"
"time"
)
const elaborateTimeout = 30 * time.Second
const elaborateSystemPrompt = `You are a task configuration assistant for Claudomator, an AI task runner that executes tasks by running Claude as a subprocess.
Your ONLY job is to convert any user request into a Claudomator task JSON object. You MUST always output valid JSON. Never ask clarifying questions. Never explain. Never refuse. Make reasonable assumptions and produce the JSON.
If the request is about Claudomator itself (e.g. "add a feature", "fix a bug", "hide completed tasks"), treat it as a software engineering task to be implemented in the Claudomator codebase at /root/workspace/claudomator.
Output ONLY a valid JSON object matching this schema (no markdown fences, no prose, no explanation):
{
"name": string — short imperative title (≤60 chars),
"description": string — 1-2 sentence summary,
"claude": {
"model": string — "sonnet" unless the task obviously needs opus,
"instructions": string — detailed, step-by-step instructions for Claude,
"working_dir": string — use "/root/workspace/claudomator" for Claudomator tasks, empty string otherwise,
"max_budget_usd": number — conservative estimate (0.25–5.00),
"allowed_tools": array — only tools the task genuinely needs
},
"timeout": string — e.g. "15m",
"priority": string — "normal" | "high" | "low",
"tags": array — relevant lowercase tags
}`
// elaboratedTask mirrors the task creation schema for elaboration responses.
type elaboratedTask struct {
Name string `json:"name"`
Description string `json:"description"`
Claude elaboratedClaude `json:"claude"`
Timeout string `json:"timeout"`
Priority string `json:"priority"`
Tags []string `json:"tags"`
}
type elaboratedClaude struct {
Model string `json:"model"`
Instructions string `json:"instructions"`
WorkingDir string `json:"working_dir"`
MaxBudgetUSD float64 `json:"max_budget_usd"`
AllowedTools []string `json:"allowed_tools"`
}
// claudeJSONResult is the top-level object returned by `claude --output-format json`.
type claudeJSONResult struct {
Result string `json:"result"`
}
// extractJSON returns the first top-level JSON object found in s, stripping
// surrounding prose or markdown code fences the model may have added.
func extractJSON(s string) string {
start := strings.Index(s, "{")
end := strings.LastIndex(s, "}")
if start == -1 || end == -1 || end < start {
return s
}
return s[start : end+1]
}
func (s *Server) claudeBinaryPath() string {
if s.elaborateCmdPath != "" {
return s.elaborateCmdPath
}
if s.claudeBinPath != "" {
return s.claudeBinPath
}
return "claude"
}
func (s *Server) handleElaborateTask(w http.ResponseWriter, r *http.Request) {
var input struct {
Prompt string `json:"prompt"`
}
if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON: " + err.Error()})
return
}
if input.Prompt == "" {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "prompt is required"})
return
}
ctx, cancel := context.WithTimeout(r.Context(), elaborateTimeout)
defer cancel()
cmd := exec.CommandContext(ctx, s.claudeBinaryPath(),
"-p", input.Prompt,
"--system-prompt", elaborateSystemPrompt,
"--output-format", "json",
"--model", "haiku",
)
var stdout, stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
s.logger.Error("elaborate: claude subprocess failed", "error", err, "stderr", stderr.String())
writeJSON(w, http.StatusBadGateway, map[string]string{
"error": fmt.Sprintf("elaboration failed: %v", err),
})
return
}
// claude --output-format json wraps the text result in {"result": "...", ...}
var wrapper claudeJSONResult
if err := json.Unmarshal(stdout.Bytes(), &wrapper); err != nil {
s.logger.Error("elaborate: failed to parse claude JSON wrapper", "error", err, "stdout", stdout.String())
writeJSON(w, http.StatusBadGateway, map[string]string{
"error": "elaboration failed: invalid JSON from claude",
})
return
}
var result elaboratedTask
if err := json.Unmarshal([]byte(extractJSON(wrapper.Result)), &result); err != nil {
s.logger.Error("elaborate: failed to parse elaborated task JSON", "error", err, "result", wrapper.Result)
writeJSON(w, http.StatusBadGateway, map[string]string{
"error": "elaboration failed: claude returned invalid task JSON",
})
return
}
if result.Name == "" || result.Claude.Instructions == "" {
writeJSON(w, http.StatusBadGateway, map[string]string{
"error": "elaboration failed: missing required fields in response",
})
return
}
writeJSON(w, http.StatusOK, result)
}
|
