/**
 * The worker's appended system prompt (R-WORK-8, R-PROMPT-3a).
 *
 * R-PROMPT-3a: lead with capability. The worker receives only the task context it
 * needs by default; normal Pi tools remain available without prompt-level bans.
 */

export const REPORT_GUIDANCE =
	"End with a concise useful report. State the outcome, important work completed, verification or evidence, " +
	"and anything remaining when relevant. Use whatever format communicates this clearly.";

export interface WorkerPromptOptions {
	name: string;
	agent: string;
	profileBody: string;
}

export function buildWorkerPrompt(options: WorkerPromptOptions): string {
	const parts: string[] = [];

	parts.push(
		"# Your assignment\n\n" +
			"You are a capable autonomous engineer working one delegated task to completion. You have this\n" +
			"repository, your full tool set, and the authority to decide how to do the work. Read what you need,\n" +
			"run what you need, and finish the task.",
	);

	if (options.profileBody.length > 0) parts.push(`# Your role\n\n${options.profileBody}`);

	parts.push(
		"# Verify the result\n\n" +
			"Before reporting, verify the important claims with the project's own tools when applicable. Report what\n" +
			"the commands actually printed. Your report is read by an orchestrator that will verify it independently,\n" +
			"so precise evidence is more useful than an optimistic claim.",
	);

	parts.push(
		"# Execution strategy\n\n" +
			"For open-ended maximize-progress tasks, favor incremental verified gains. Give speculative searches and long commands " +
			"an explicit time, node, or attempt bound suited to their expected payoff. After a timeout or repeated error, inspect " +
			"the current state, preserve useful artifacts, and pivot to another credible approach so productive execution resumes quickly. " +
			"For repeated or deterministic attempts, keep a reproducible best-so-far baseline and compare each result with it. " +
			"Change a meaningful variable between attempts, then report the best result, failure boundary, learned constraint, and next high-value delta.",
	);

	parts.push(`# Final message\n\n${REPORT_GUIDANCE}`);

	// The task author supplies the behavioral brief; unavailable orchestration
	// capabilities are enforced by the worker role rather than negative prose.
	parts.push(
		"# Working rules\n\n" +
			"- Keep Git history unchanged by default. Perform commit or push operations when the task explicitly includes them.",
	);

	return parts.join("\n\n");
}

/** A correction is appended to the worker transcript as an ordinary user message. */
export function formatSteering(message: string): string {
	return message;
}