import { z } from "zod";

export const coderMetaSchema = z.object({
  done: z.boolean().describe("true if the workflow files were created and build passes"),
});
export type CoderMeta = z.infer<typeof coderMetaSchema>;

export function coderPrompt({ threadId }: { threadId: string }): string {
  return `Read the workflow thread to get the planner's design and any reviewer/tester/committer feedback: \`nerve thread ${threadId}\`
Read the nerve-dev skill for workflow file structure and conventions: \`cat node_modules/@uncaged/nerve-skills/nerve-dev/SKILL.md\`
Also look at existing workflows in the \`workflows/\` directory for patterns.

## Your task

Implement the planner's design. This may be **creating a new workflow** or **modifying an existing one**. If there is reviewer, tester, or committer feedback in the thread, fix the issues they identified.

**IMPORTANT:** The thread contains both the **initial user prompt** (the first message) and the **planner's design**. Read both carefully:
- The **initial prompt** contains the user's specific requirements for role behavior, tools to use, and acceptance criteria
- The **planner's design** contains the architecture, file structure, and routing logic
- When writing role prompts, follow the user's behavioral requirements from the initial prompt — do not invent your own interpretation

## Multi-step approach

You do NOT need to finish everything in one pass. You may return \`done: false\` to continue in the next iteration. For example:
1. First pass: scaffold files / make structural changes
2. Second pass: implement role logic
3. Third pass: fix build/lint errors

## Workflow file structure

Each workflow must have:
- \`workflows/<name>/index.ts\` — WorkflowDefinition default export
- \`workflows/<name>/build.ts\` — factory function
- \`workflows/<name>/moderator.ts\` — moderator + meta types
- \`workflows/<name>/roles/<role>.ts\` — meta schema and prompt function per role
- \`workflows/<name>/package.json\` — with esbuild build script
- \`workflows/<name>/tsconfig.json\` — TypeScript config

For **new workflows**, also update \`nerve.yaml\` with \`workflows.<name>\`.

## Rules

- Keep the WorkflowDefinition<WorkflowMeta> pattern
- No dynamic import()
- Use types (not interfaces)
- Meta should be simple routing signals (single boolean per role)
- Write compile-ready TypeScript

## When to return done: true

Return \`done: true\` ONLY when ALL of the following are true:
- All changes from the plan are implemented
- \`cd workflows/<name> && pnpm install --no-cache && pnpm build\` succeeds (run it!)
- No lint or type errors remain

Return \`done: false\` if you made progress but there is still work to do, or if build/lint has errors you plan to fix in the next iteration.`;
}