/** Shared utility functions and constants for WorkItemDetailPanel sub-components. */

import type { AgentStatusValue } from "../api/agents";

export const STAGE_LABELS: Record<string, string> = {
	backlog: "Backlog",
	current: "Current",
	qa: "QA",
	merge: "To Merge",
	done: "Done",
	archived: "Archived",
};

export const STATUS_COLORS: Record<AgentStatusValue, string> = {
	running: "#3fb950",
	pending: "#e3b341",
	completed: "#aaa",
	failed: "#f85149",
};

/**
 * Strip YAML front matter and the first H1 heading from story content before
 * rendering. The panel header already shows the story ID/title, so rendering
 * them again inside the markdown body creates duplicate information.
 */
export function stripDisplayContent(content: string): string {
	// Guard: content may be undefined/null at runtime if the server response is
	// missing the field (e.g. a tombstoned story returns an error object).
	if (!content) return "";
	let text = content;
	// Strip YAML front matter (--- ... ---)
	if (text.startsWith("---")) {
		const eol = text.indexOf("\n");
		if (eol !== -1) {
			const closeIdx = text.indexOf("\n---", eol);
			if (closeIdx !== -1) {
				text = text.slice(closeIdx + 4);
			}
		}
	}
	// Trim leading blank lines left by the front matter
	text = text.trimStart();
	// Strip the first H1 heading — it duplicates the panel header title
	if (text.startsWith("# ")) {
		const eol = text.indexOf("\n");
		text = eol !== -1 ? text.slice(eol + 1).trimStart() : "";
	}
	return text;
}

/**
 * Format the story ID/title line shown in the panel header.
 * Produces e.g. "Story 454: My Story Name" or "Bug 12: Crash on startup".
 * Falls back to name or storyId when the pattern doesn't match.
 */
export function formatStoryTitle(storyId: string, name: string | null): string {
	const match = storyId.match(/^(\d+)_([a-z]+)_/);
	if (!match || !name) return name ?? storyId;
	const [, number, type] = match;
	const typeLabel = type.charAt(0).toUpperCase() + type.slice(1);
	return `${typeLabel} ${number}: ${name}`;
}