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| 1 | +import { mkdir, readFile, writeFile } from "fs/promises"; |
| 2 | +import { join, resolve } from "path"; |
| 3 | +import { discoverSkills } from "../skills.js"; |
| 4 | +import { validateWorkflow } from "../utils/schemas.js"; |
| 5 | +import { generateWorkflow, type LlmClient } from "../utils/workflow-generator.js"; |
| 6 | + |
| 7 | +interface GenerateFlags { |
| 8 | + dir: string; |
| 9 | + prompt?: string; |
| 10 | + refine?: string; |
| 11 | + model?: string; |
| 12 | + apiKey?: string; |
| 13 | + dryRun: boolean; |
| 14 | +} |
| 15 | + |
| 16 | +const RED = (s: string) => `\x1b[31m${s}\x1b[0m`; |
| 17 | +const GREEN = (s: string) => `\x1b[32m${s}\x1b[0m`; |
| 18 | +const DIM = (s: string) => `\x1b[2m${s}\x1b[0m`; |
| 19 | +const BOLD = (s: string) => `\x1b[1m${s}\x1b[0m`; |
| 20 | + |
| 21 | +const MAX_RETRIES = 2; |
| 22 | + |
| 23 | +function printHelp(): void { |
| 24 | + console.log(`${BOLD("gitagent workflow")} — generate SkillFlow workflows from natural language |
| 25 | +
|
| 26 | +Usage: |
| 27 | + gitagent workflow generate [options] |
| 28 | +
|
| 29 | +Options: |
| 30 | + -d, --dir <path> Agent directory (default: current directory) |
| 31 | + -p, --prompt <text> Natural-language description of the workflow (required) |
| 32 | + --refine <file> Refine an existing workflow YAML by applying --prompt as an instruction |
| 33 | + -m, --model <spec> LLM model in provider:model form (default: openai:gpt-4o) |
| 34 | + --api-key <key> API key for the provider (falls back to OPENAI_API_KEY or <PROVIDER>_API_KEY) |
| 35 | + --dry-run Print the generated YAML to stdout instead of writing a file |
| 36 | + -h, --help Show this help message |
| 37 | +
|
| 38 | +Examples: |
| 39 | + gitagent workflow generate -p "every morning summarize unread emails and post to Slack" |
| 40 | + gitagent workflow generate -p "add a human approval step before the Slack post" --refine workflows/morning-digest.yaml |
| 41 | +`); |
| 42 | +} |
| 43 | + |
| 44 | +function parseFlags(argv: string[]): GenerateFlags { |
| 45 | + const flags: GenerateFlags = { dir: process.cwd(), dryRun: false }; |
| 46 | + for (let i = 0; i < argv.length; i++) { |
| 47 | + const a = argv[i]; |
| 48 | + switch (a) { |
| 49 | + case "-d": |
| 50 | + case "--dir": |
| 51 | + flags.dir = argv[++i]; |
| 52 | + break; |
| 53 | + case "-p": |
| 54 | + case "--prompt": |
| 55 | + flags.prompt = argv[++i]; |
| 56 | + break; |
| 57 | + case "--refine": |
| 58 | + flags.refine = argv[++i]; |
| 59 | + break; |
| 60 | + case "-m": |
| 61 | + case "--model": |
| 62 | + flags.model = argv[++i]; |
| 63 | + break; |
| 64 | + case "--api-key": |
| 65 | + flags.apiKey = argv[++i]; |
| 66 | + break; |
| 67 | + case "--dry-run": |
| 68 | + flags.dryRun = true; |
| 69 | + break; |
| 70 | + case "-h": |
| 71 | + case "--help": |
| 72 | + printHelp(); |
| 73 | + process.exit(0); |
| 74 | + break; |
| 75 | + default: |
| 76 | + if (!a.startsWith("-") && flags.prompt === undefined) { |
| 77 | + flags.prompt = a; |
| 78 | + } else { |
| 79 | + console.error(RED(`Unknown option: ${a}`)); |
| 80 | + process.exit(2); |
| 81 | + } |
| 82 | + } |
| 83 | + } |
| 84 | + return flags; |
| 85 | +} |
| 86 | + |
| 87 | +function slugify(name: string): string { |
| 88 | + const cleaned = name |
| 89 | + .toLowerCase() |
| 90 | + .trim() |
| 91 | + .replace(/[^a-z0-9-]+/g, "-") |
| 92 | + .replace(/^-+|-+$/g, "") |
| 93 | + .replace(/-+/g, "-"); |
| 94 | + return cleaned || "workflow"; |
| 95 | +} |
| 96 | + |
| 97 | +export interface RunGenerateOptions { |
| 98 | + flags: GenerateFlags; |
| 99 | + llm?: LlmClient; |
| 100 | +} |
| 101 | + |
| 102 | +export async function runGenerate(opts: RunGenerateOptions): Promise<{ filePath?: string; yaml: string; }> { |
| 103 | + const { flags } = opts; |
| 104 | + if (!flags.prompt || !flags.prompt.trim()) { |
| 105 | + throw new Error("--prompt is required"); |
| 106 | + } |
| 107 | + |
| 108 | + const agentDir = resolve(flags.dir); |
| 109 | + const skills = await discoverSkills(agentDir); |
| 110 | + |
| 111 | + let previousWorkflow: string | undefined; |
| 112 | + if (flags.refine) { |
| 113 | + const refinePath = resolve(agentDir, flags.refine); |
| 114 | + previousWorkflow = await readFile(refinePath, "utf-8"); |
| 115 | + } |
| 116 | + |
| 117 | + let promptForLlm = flags.prompt.trim(); |
| 118 | + let lastErrors: string[] = []; |
| 119 | + let yaml = ""; |
| 120 | + |
| 121 | + for (let attempt = 0; attempt <= MAX_RETRIES; attempt++) { |
| 122 | + console.error(DIM(attempt === 0 ? "Generating workflow..." : `Retry ${attempt}/${MAX_RETRIES} — fixing validation errors...`)); |
| 123 | + yaml = await generateWorkflow({ |
| 124 | + prompt: promptForLlm, |
| 125 | + skills, |
| 126 | + previousWorkflow, |
| 127 | + model: flags.model, |
| 128 | + apiKey: flags.apiKey, |
| 129 | + llm: opts.llm, |
| 130 | + }); |
| 131 | + const result = validateWorkflow(yaml); |
| 132 | + if (result.valid) { |
| 133 | + lastErrors = []; |
| 134 | + break; |
| 135 | + } |
| 136 | + lastErrors = result.errors; |
| 137 | + if (attempt < MAX_RETRIES) { |
| 138 | + promptForLlm = |
| 139 | + `${flags.prompt.trim()}\n\nThe previous attempt failed schema validation. Fix these errors and return the full YAML again:\n` + |
| 140 | + result.errors.map((e) => `- ${e}`).join("\n"); |
| 141 | + } |
| 142 | + } |
| 143 | + |
| 144 | + if (lastErrors.length > 0) { |
| 145 | + console.error(RED("\nWorkflow validation failed after retries:")); |
| 146 | + for (const e of lastErrors) console.error(RED(` - ${e}`)); |
| 147 | + console.error(DIM("\nLast generated YAML:\n")); |
| 148 | + console.error(yaml); |
| 149 | + throw new Error("Validation failed after retries"); |
| 150 | + } |
| 151 | + |
| 152 | + if (flags.dryRun) { |
| 153 | + process.stdout.write(yaml.endsWith("\n") ? yaml : yaml + "\n"); |
| 154 | + return { yaml }; |
| 155 | + } |
| 156 | + |
| 157 | + // Parse the validated YAML to get the workflow name for the file path. |
| 158 | + const validated = validateWorkflow(yaml).data!; |
| 159 | + const slug = slugify(validated.name); |
| 160 | + const workflowsDir = join(agentDir, "workflows"); |
| 161 | + await mkdir(workflowsDir, { recursive: true }); |
| 162 | + const filePath = join(workflowsDir, `${slug}.yaml`); |
| 163 | + await writeFile(filePath, yaml.endsWith("\n") ? yaml : yaml + "\n", "utf-8"); |
| 164 | + console.error(GREEN(`\nWrote workflow to ${filePath}`)); |
| 165 | + return { filePath, yaml }; |
| 166 | +} |
| 167 | + |
| 168 | +export async function handleWorkflowCommand(argv: string[]): Promise<void> { |
| 169 | + // argv is the raw process.argv tail starting at the 'workflow' token. |
| 170 | + // argv[0] === "workflow"; argv[1] is the sub-command. |
| 171 | + const sub = argv[1]; |
| 172 | + if (!sub || sub === "-h" || sub === "--help") { |
| 173 | + printHelp(); |
| 174 | + return; |
| 175 | + } |
| 176 | + if (sub !== "generate") { |
| 177 | + console.error(RED(`Unknown subcommand: ${sub}`)); |
| 178 | + printHelp(); |
| 179 | + process.exit(2); |
| 180 | + } |
| 181 | + const flags = parseFlags(argv.slice(2)); |
| 182 | + try { |
| 183 | + await runGenerate({ flags }); |
| 184 | + } catch (err: any) { |
| 185 | + console.error(RED(`\nError: ${err?.message ?? String(err)}`)); |
| 186 | + process.exit(1); |
| 187 | + } |
| 188 | +} |
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