import { describe, expect, it } from "vitest";
import { docsVersionSources } from "./docs-version-sources";
import type { VersionAvailability } from "./docs-versions";
import {
	docsVersions,
	getVersionFromPathname,
	getVersionTargetHref,
	resolveVersionFromSlug,
	scopeDocsHref,
	versionedDocsHref,
} from "./docs-versions";

const [betaVersion, latestVersion, version16] = docsVersions;

const availability: VersionAvailability = {
	latest: [],
	"1.6": ["/docs/introduction", "/docs/plugins/scim"],
	beta: ["/docs/introduction", "/docs/plugins/scim"],
};

describe("documentation versions", () => {
	it("lists beta before stable while keeping stable as the default", () => {
		expect(docsVersions.map((version) => version.id)).toEqual([
			"beta",
			"latest",
			"1.6",
		]);
		expect(getVersionFromPathname("/docs/introduction").id).toBe("latest");
		expect(resolveVersionFromSlug([]).version.id).toBe("latest");
	});

	it("targets maintenance branches for documentation edits", () => {
		expect(docsVersionSources[version16.id].editBranch).toBe("v1.6.x");
	});

	it("pins historical documentation to an immutable revision", () => {
		expect(docsVersionSources[latestVersion.id].commitSha).toBeNull();
		expect(docsVersionSources[version16.id].commitSha).toMatch(
			/^[0-9a-f]{40}$/,
		);
	});

	it("pins beta documentation to next and keeps its release line separate", () => {
		expect(docsVersionSources[betaVersion.id].editBranch).toBe("next");
		expect(docsVersionSources[betaVersion.id].commitSha).toMatch(
			/^[0-9a-f]{40}$/,
		);
		expect(betaVersion.releaseLine).toBe("1.8");
	});

	it("resolves beta pages and scopes their links", () => {
		expect(resolveVersionFromSlug(["beta", "plugins", "scim"])).toEqual({
			version: betaVersion,
			relSlug: ["plugins", "scim"],
		});
		expect(getVersionFromPathname("/docs/beta/plugins/scim")).toBe(betaVersion);
		expect(getVersionFromPathname("/docs/beta-tutorial")).toBe(latestVersion);
		expect(scopeDocsHref("/docs/plugins/scim", betaVersion)).toBe(
			"/docs/beta/plugins/scim",
		);
		expect(scopeDocsHref("/docs/beta/plugins/scim", betaVersion)).toBe(
			"/docs/beta/plugins/scim",
		);
		expect(scopeDocsHref("/docs/1.6/introduction", betaVersion)).toBe(
			"/docs/1.6/introduction",
		);
	});

	it("switches between beta and stable without losing the current page", () => {
		expect(
			getVersionTargetHref(
				"/docs/beta/plugins/scim",
				betaVersion,
				latestVersion,
				{ ...availability, latest: ["/docs/plugins/scim"] },
			),
		).toBe("/docs/plugins/scim");
		expect(
			getVersionTargetHref(
				"/docs/plugins/scim",
				latestVersion,
				betaVersion,
				availability,
			),
		).toBe("/docs/beta/plugins/scim");
	});

	it("resolves archived version slugs", () => {
		expect(resolveVersionFromSlug(["1.6", "plugins", "scim"])).toEqual({
			version: version16,
			relSlug: ["plugins", "scim"],
		});
	});

	it("detects archived versions from the pathname", () => {
		expect(getVersionFromPathname("/docs/1.6/plugins/scim")).toBe(version16);
	});

	it("builds archived documentation URLs", () => {
		expect(versionedDocsHref("/docs/plugins/scim", version16)).toBe(
			"/docs/1.6/plugins/scim",
		);
		expect(versionedDocsHref("/docs", version16)).toBe(
			"/docs/1.6/introduction",
		);
	});

	it("keeps the same page when it exists in the target version", () => {
		expect(
			getVersionTargetHref(
				"/docs/plugins/scim",
				latestVersion,
				version16,
				availability,
			),
		).toBe("/docs/1.6/plugins/scim");
	});

	it("falls back to the closest parent page", () => {
		expect(
			getVersionTargetHref(
				"/docs/plugins/scim/reference",
				latestVersion,
				version16,
				availability,
			),
		).toBe("/docs/1.6/plugins/scim");
	});

	it("falls back to the introduction when no path segment matches", () => {
		expect(
			getVersionTargetHref(
				"/docs/unknown",
				latestVersion,
				version16,
				availability,
			),
		).toBe("/docs/1.6/introduction");
	});
});