import { describe, it, expect, beforeEach, vi } from 'vitest'
import { initShare } from '../../assets/modules/share.js'

describe('initShare', () => {
    beforeEach(() => {
        document.body.innerHTML = ''
    })

    it('does nothing without share buttons', () => {
        expect(() => initShare()).not.toThrow()
    })

    it('copies URL to clipboard on click', async () => {
        document.body.innerHTML = `
            <button data-share-copy="https://example.com/event/1">
                <svg class="icon"></svg>
            </button>
        `

        const writeText = vi.fn().mockResolvedValue(undefined)
        globalThis.navigator = { clipboard: { writeText } }

        initShare()
        document.querySelector('[data-share-copy]').click()

        await new Promise(r => setTimeout(r, 10))

        expect(writeText).toHaveBeenCalledWith('https://example.com/event/1')
    })

    it('shows checkmark after copy then restores', async () => {
        vi.useFakeTimers()

        document.body.innerHTML = `
            <button data-share-copy="https://example.com">
                <svg class="original"></svg>
            </button>
        `

        globalThis.navigator = { clipboard: { writeText: vi.fn().mockResolvedValue(undefined) } }

        initShare()
        const btn = document.querySelector('[data-share-copy]')
        const originalHtml = btn.innerHTML
        btn.click()

        await vi.advanceTimersByTimeAsync(100)

        expect(btn.innerHTML).toContain('M5 13l4 4L19 7')

        vi.advanceTimersByTime(1500)

        expect(btn.innerHTML).toBe(originalHtml)

        vi.useRealTimers()
    })

    it('handles multiple share buttons', async () => {
        document.body.innerHTML = `
            <button data-share-copy="https://a.com"><svg></svg></button>
            <button data-share-copy="https://b.com"><svg></svg></button>
        `

        const writeText = vi.fn().mockResolvedValue(undefined)
        globalThis.navigator = { clipboard: { writeText } }

        initShare()

        document.querySelectorAll('[data-share-copy]')[1].click()

        await new Promise(r => setTimeout(r, 10))

        expect(writeText).toHaveBeenCalledWith('https://b.com')
    })
})