import { describe, expect, it } from "bun:test";
import {
	SETTING_TABS,
	SETTINGS_SCHEMA,
	type SettingTab,
	TAB_GROUPS,
} from "@oh-my-pi/pi-coding-agent/config/settings-schema";
import { getSettingsForTab } from "@oh-my-pi/pi-coding-agent/modes/components/settings-defs";

interface UiShape {
	tab: SettingTab;
	group?: string;
}

describe("settings layout", () => {
	it("every UI setting declares a group registered in TAB_GROUPS for its tab", () => {
		const violations: string[] = [];
		for (const path in SETTINGS_SCHEMA) {
			const ui = (SETTINGS_SCHEMA[path as keyof typeof SETTINGS_SCHEMA] as { ui?: UiShape }).ui;
			if (!ui) continue;
			if (!ui.group) {
				violations.push(`${path}: missing ui.group`);
			} else if (!TAB_GROUPS[ui.tab].includes(ui.group)) {
				violations.push(`${path}: group "${ui.group}" not in TAB_GROUPS["${ui.tab}"]`);
			}
		}
		expect(violations).toEqual([]);
	});

	it("getSettingsForTab returns contiguous groups in TAB_GROUPS order", () => {
		for (const tab of SETTING_TABS) {
			const defs = getSettingsForTab(tab);
			expect(defs.length).toBeGreaterThan(0);

			// Collapse the def sequence into the order groups first appear.
			const sequence: string[] = [];
			for (const def of defs) {
				const group = def.group ?? "";
				if (sequence[sequence.length - 1] !== group) sequence.push(group);
			}

			// Contiguous: no group appears twice in the collapsed sequence.
			expect(new Set(sequence).size).toBe(sequence.length);

			// Ordered: grouped sections follow the TAB_GROUPS declaration order.
			const grouped = sequence.filter(group => group !== "");
			const expected = TAB_GROUPS[tab].filter(group => grouped.includes(group));
			expect(grouped).toEqual(expected);
		}
	});
});