import { describe, expect, it } from "vitest";
import { matches, parseQuery, toQuery } from "../src/query.js";
import type { FilterSpec, Query, QueryError } from "../src/query.js";

// goal 1d (capsite checklist): the design as tests; unskip as it lands

const NOW = new Date("2026-10-07T12:00:00.000Z");
const DAY = 24 * 60 * 60 * 1000;

const fromUrl = (qs: string) => parseQuery(new URLSearchParams(qs), NOW);
const ok = (q: Query | QueryError) => {
	if ("error" in q) throw new Error(`expected a query: ${q.error}`);
	return q;
};
const url = (qs: string) => ok(fromUrl(qs));
const spec = (s: FilterSpec) => ok(toQuery(s, NOW));
const refused = (q: Query | QueryError) => {
	expect(q).toHaveProperty("error");
	return (q as QueryError).error;
};
const day = (iso: string) => new Date(`${iso}T00:00:00.000Z`);
const range = (q: Query) => [q.after?.toISOString().slice(0, 10), q.before?.toISOString().slice(0, 10)];

describe.skip("filters: one spec, two spellings (goal 1d)", () => {
	it("devs write { days: 7 }; URLs write ?days=7; same query", () => {
		expect(spec({ days: 7 })).toEqual(url("days=7"));
		expect(spec({ days: 7 }).after).toEqual(new Date(NOW.getTime() - 7 * DAY));
	});

	it("an empty spec or URL filters nothing", () => {
		expect(spec({})).toEqual({ by: "updated", words: [], tags: [] });
		expect(url("")).toEqual({ by: "updated", words: [], tags: [] });
	});

	it("empty URL fields mean absent (a GET form submits them all)", () => {
		expect(url("days=7&after=&before=&in=&by=&q=")).toEqual(url("days=7"));
	});

	it("refuses a days value that isn't a whole number from 1 to 3650", () => {
		for (const bad of ["0", "-7", "7x", "1.5", "3651"]) expect(refused(fromUrl(`days=${bad}`))).toMatch(/days/);
		expect(refused(toQuery({ days: 0 }, NOW))).toMatch(/days/);
	});
});

describe.skip("windows: UTC, half-open (goal 1d)", () => {
	it("after/before are UTC days: after inclusive from 00:00Z, before exclusive", () => {
		expect(range(url("after=2026-01-01&before=2026-02-01"))).toEqual(["2026-01-01", "2026-02-01"]);
		expect(url("after=2026/01/01").after).toEqual(day("2026-01-01"));
	});

	it("in= names a year, month, quarter, or ISO week", () => {
		expect(range(url("in=2025"))).toEqual(["2025-01-01", "2026-01-01"]);
		expect(range(url("in=2025-03"))).toEqual(["2025-03-01", "2025-04-01"]);
		expect(range(url("in=2025-12"))).toEqual(["2025-12-01", "2026-01-01"]);
		expect(range(url("in=2025-Q1"))).toEqual(["2025-01-01", "2025-04-01"]);
		expect(range(url("in=2025-Q4"))).toEqual(["2025-10-01", "2026-01-01"]);
		// ISO 8601: weeks start Monday; week 1 holds the year's first Thursday
		expect(range(url("in=2025-W01"))).toEqual(["2024-12-30", "2025-01-06"]);
		expect(range(url("in=2026-W53"))).toEqual(["2026-12-28", "2027-01-04"]);
	});

	it("refuses malformed dates and periods", () => {
		expect(refused(fromUrl("after=2026-13-01"))).toMatch(/after/);
		expect(refused(fromUrl("before=yesterday"))).toMatch(/before/);
		// 2025 has 52 ISO weeks (it starts on a Wednesday, not a leap year)
		for (const bad of ["2025-13", "2025-Q5", "2025-W53", "2025-W00", "25", "2025-1"]) {
			expect(refused(fromUrl(`in=${bad}`))).toMatch(/in/);
		}
	});

	it("refuses a bound given twice, and an empty window", () => {
		expect(refused(fromUrl("days=7&after=2026-01-01"))).toMatch(/days.*after|after.*days/);
		expect(refused(fromUrl("in=2025&days=7"))).toMatch(/in/);
		expect(refused(fromUrl("in=2025&before=2025-02-01"))).toMatch(/in/);
		expect(refused(fromUrl("after=2026-02-01&before=2026-02-01"))).toMatch(/after.*before|before.*after/);
	});

	it("days combines with before", () => {
		const q = url("days=30&before=2026-10-01");
		expect(q.after).toEqual(new Date(NOW.getTime() - 30 * DAY));
		expect(q.before).toEqual(day("2026-10-01"));
	});

	it("by=created or by=updated picks the date (default updated); anything else is refused", () => {
		expect(url("days=7").by).toBe("updated");
		expect(url("days=7&by=created").by).toBe("created");
		expect(refused(fromUrl("days=7&by=modified"))).toMatch(/by/);
	});
});

describe.skip("q: terms and operators (goal 1d)", () => {
	const q = (text: string) => url(`q=${encodeURIComponent(text)}`);

	it("words, phrases, #tags, tag:, and - negation; case-insensitive", () => {
		const parsed = q('Foo bar -baz "exact phrase" #Weekly tag:ocap -#draft -tag:old');
		expect(parsed.words).toEqual([
			{ text: "foo", negated: false },
			{ text: "bar", negated: false },
			{ text: "baz", negated: true },
			{ text: "exact phrase", negated: false },
		]);
		expect(parsed.tags).toEqual([
			{ text: "weekly", negated: false },
			{ text: "ocap", negated: false },
			{ text: "draft", negated: true },
			{ text: "old", negated: true },
		]);
	});

	it("gmail's after:/before:/newer_than: set the window", () => {
		expect(range(q("after:2026-01-01 before:2026/02/01"))).toEqual(["2026-01-01", "2026-02-01"]);
		expect(q("newer_than:7d").after).toEqual(new Date(NOW.getTime() - 7 * DAY));
		expect(q("newer_than:2w").after).toEqual(new Date(NOW.getTime() - 14 * DAY));
		// months and years are calendar steps back, in UTC
		expect(q("newer_than:1m").after).toEqual(new Date("2026-09-07T12:00:00.000Z"));
		expect(q("newer_than:1y").after).toEqual(new Date("2025-10-07T12:00:00.000Z"));
	});

	it("Slack's during: (alias in:) names a period", () => {
		expect(range(q("during:2025-Q1"))).toEqual(["2025-01-01", "2025-04-01"]);
		expect(range(q("in:2025-W01"))).toEqual(["2024-12-30", "2025-01-06"]);
	});

	it("GitHub-style created:/updated: name the date and the period at once", () => {
		const c = q("created:2025");
		expect(c.by).toBe("created");
		expect(range(c)).toEqual(["2025-01-01", "2026-01-01"]);
		expect(q("updated:2025-W03").by).toBe("updated");
	});

	it("operators and fields combine, but a bound given twice is refused", () => {
		const both = url(`by=created&q=${encodeURIComponent("during:2025 #weekly")}`);
		expect(both.by).toBe("created");
		expect(both.tags).toEqual([{ text: "weekly", negated: false }]);
		expect(refused(fromUrl(`days=7&q=${encodeURIComponent("newer_than:30d")}`))).toMatch(/newer_than|days/);
		expect(refused(fromUrl(`by=updated&q=${encodeURIComponent("created:2025")}`))).toMatch(/by|created/);
	});

	it("an unknown word:stuff is plain text (so urls work as words)", () => {
		expect(q("https://erights.org foo:bar").words).toEqual([
			{ text: "https://erights.org", negated: false },
			{ text: "foo:bar", negated: false },
		]);
	});

	it("a malformed known operator is refused, not searched as text", () => {
		expect(refused(fromUrl(`q=${encodeURIComponent("newer_than:7x")}`))).toMatch(/newer_than/);
		expect(refused(fromUrl(`q=${encodeURIComponent("during:2025-Q5")}`))).toMatch(/during/);
	});
});

/** an item updated at `iso`, diigo-shaped */
const item = (iso: string, extra: Record<string, unknown> = {}) => ({
	updated_at: new Date(iso).getTime() / 1000,
	title: "",
	description: "",
	url: "https://example.com/",
	tags: "",
	...extra,
});
const query = (q: Partial<Query>): Query => ({ by: "updated", words: [], tags: [], ...q });

describe.skip("matches (goal 1d)", () => {
	it("the window is half-open: after inclusive, before exclusive", () => {
		const q = query({ after: day("2026-01-01"), before: day("2026-02-01") });
		expect(matches(item("2026-01-01T00:00:00.000Z"), q)).toBe(true);
		expect(matches(item("2025-12-31T23:59:59.000Z"), q)).toBe(false);
		expect(matches(item("2026-01-31T23:59:59.000Z"), q)).toBe(true);
		expect(matches(item("2026-02-01T00:00:00.000Z"), q)).toBe(false);
	});

	it("by=created windows on created_at instead of updated_at", () => {
		const jan = { after: day("2026-01-01") };
		// an old bookmark, edited recently
		const edited = item("2026-01-05T00:00:00Z", { created_at: new Date("2025-06-01T00:00:00Z").getTime() / 1000 });
		expect(matches(edited, query({ ...jan, by: "updated" }))).toBe(true);
		expect(matches(edited, query({ ...jan, by: "created" }))).toBe(false);
	});

	it("every word must appear in the title, description, or url (case-insensitive)", () => {
		const it1 = item("2026-01-05T00:00:00Z", { title: "Capability Patterns", url: "https://erights.org/x" });
		expect(matches(it1, query({ words: [{ text: "capability", negated: false }] }))).toBe(true);
		expect(matches(it1, query({ words: [{ text: "erights", negated: false }] }))).toBe(true);
		expect(
			matches(it1, query({ words: [{ text: "capability", negated: false }, { text: "missing", negated: false }] })),
		).toBe(false);
	});

	it("a negated word excludes", () => {
		const it1 = item("2026-01-05T00:00:00Z", { title: "Capability Patterns" });
		expect(matches(it1, query({ words: [{ text: "patterns", negated: true }] }))).toBe(false);
	});

	it("a phrase matches only contiguously", () => {
		const it1 = item("2026-01-05T00:00:00Z", { description: "object capability patterns" });
		expect(matches(it1, query({ words: [{ text: "capability patterns", negated: false }] }))).toBe(true);
		expect(matches(it1, query({ words: [{ text: "patterns object", negated: false }] }))).toBe(false);
	});

	it("a tag matches a whole comma-separated tag, case-insensitive; not a substring", () => {
		const it1 = item("2026-01-05T00:00:00Z", { tags: "ocap,Weekly-Notes,js" });
		expect(matches(it1, query({ tags: [{ text: "weekly-notes", negated: false }] }))).toBe(true);
		expect(matches(it1, query({ tags: [{ text: "weekly", negated: false }] }))).toBe(false);
		expect(matches(it1, query({ tags: [{ text: "js", negated: true }] }))).toBe(false);
	});
});