import { describe, expect, test } from "bun:test"

import { resolveKeybindOption, upsertCommandRegistration } from "./command"

describe("upsertCommandRegistration", () => {

test("replaces keyed registrations", () => {

const one = () => [{ id: "one", title: "One" }]

const two = () => [{ id: "two", title: "Two" }]

const next = upsertCommandRegistration([{ key: "layout", options: one }], { key: "layout", options: two })

expect(next).toHaveLength(1)

expect(next[0]?.options).toBe(two)

})

test("keeps unkeyed registrations additive", () => {

const one = () => [{ id: "one", title: "One" }]

const two = () => [{ id: "two", title: "Two" }]

const next = upsertCommandRegistration([{ options: one }], { options: two })

expect(next).toHaveLength(2)

expect(next[0]?.options).toBe(two)

expect(next[1]?.options).toBe(one)

})

})

describe("resolveKeybindOption", () => {

test("prefers a matching contextual command over the global fallback", () => {

const fallback = { id: "tab.close", title: "Close tab" }

const contextual = { id: "terminal.close", title: "Close terminal", when: () => true }

expect(resolveKeybindOption([fallback, contextual], new KeyboardEvent("keydown"))).toBe(contextual)

})

test("uses the global fallback outside the command context", () => {

const fallback = { id: "tab.close", title: "Close tab" }

const contextual = { id: "terminal.close", title: "Close terminal", when: () => false }

expect(resolveKeybindOption([fallback, contextual], new KeyboardEvent("keydown"))).toBe(fallback)

})

})