import type { AgentFn, Role, StartStep } from "@uncaged/nerve-core";
import type { LlmExtractorConfig } from "@uncaged/nerve-workflow-utils";
import { createRole } from "@uncaged/nerve-workflow-utils";
import { z } from "zod";

export const testerMetaSchema = z.object({
  passed: z.boolean().describe("true if all e2e checks passed"),
});
export type TesterMeta = z.infer<typeof testerMetaSchema>;

export function testerPrompt({ threadId, nerveRoot }: { threadId: string; nerveRoot: string }): string {
  return `You are testing a newly created Nerve sense end-to-end.

**IMPORTANT: The Nerve workspace is at \`${nerveRoot}\`. All paths below are relative to this directory. Always \`cd ${nerveRoot}\` first.**

Read the workflow thread for context: \`nerve thread ${threadId}\`
Read the nerve-dev skill for expected file structure: \`cat ${nerveRoot}/node_modules/@uncaged/nerve-skills/nerve-dev/SKILL.md\`

Verify the full lifecycle in this order:

1. **File check** — all required sense files exist:
   - \`senses/<name>/src/index.ts\`
   - \`senses/<name>/src/schema.ts\`
   - \`senses/<name>/migrations/\`
   - \`senses/<name>/package.json\`

2. **Build** — run inside the sense directory:
   \`\`\`
   cd ${nerveRoot}/senses/<name> && pnpm install --no-cache && pnpm build
   \`\`\`
   Must produce \`index.js\` at sense root without errors.

3. **Config check** — \`nerve validate\` passes, confirming nerve.yaml is valid.

4. **Sense list** — \`nerve sense list\` shows the sense.

5. **Trigger** — \`nerve sense trigger <name>\` completes without error.

6. **Query** — \`nerve sense query <name>\` — retry up to 20s until rows appear.

If any step fails, include the relevant error output.

Output a clear summary: what you checked, what passed, what failed, and why.`;
}

export function createTesterRole(
  adapter: AgentFn,
  extract: LlmExtractorConfig,
  nerveRoot: string,
): Role<TesterMeta> {
  return createRole(
    adapter,
    async (start: StartStep) =>
      testerPrompt({ threadId: start.meta.threadId, nerveRoot }),
    testerMetaSchema,
    extract,
  );
}