import { env } from "@/env.mjs"
import { ClassValue, clsx } from "clsx"
import dayjs from "dayjs"
import { twMerge } from "tailwind-merge"

// tailwindcss classnames generator from shadcn
export function cn(...inputs: ClassValue[]) {
    return twMerge(clsx(inputs))
}

// changes the default size of the image to be fetched
export function getImageURL(hashId: string, size: string): string {
    const IGDB_IMG_BASE_URL = env.IGDB_IMG_BASE_URL ?? ''
    return `${IGDB_IMG_BASE_URL}/t_${size}/${hashId}.jpg`
}

// calculates the offset for the query
export function calculateOffset(page: number, limit: number): number {
    return (page - 1) * limit
}

export function formatDate(data: number) {
    const date = new Date(data)
    return date.toLocaleDateString('en-US', {
        month: 'short',
        day: 'numeric',
        year: 'numeric'
    })
}

// formats the time elapsed since creation
export function formatTimeElapsed(createdAt: Date) {
    const now = dayjs()
    const timeDiff = Math.abs(now.diff(dayjs(createdAt))) // Difference in milliseconds
    const seconds = Math.floor(timeDiff / 1000) // Convert to seconds
    const minutes = Math.floor(seconds / 60) // Convert to minutes
    const hours = Math.floor(minutes / 60) // Convert to hours
    const days = Math.floor(hours / 24) // Convert to days

    if (days > 0) {
        return dayjs(createdAt).format('MMM D') // Show the date if days have passed
    } else if (hours > 0) {
        return hours + 'h' // Show hours if hours have passed
    } else if (minutes > 0) {
        return minutes + 'm' // Show minutes if minutes have passed
    } else {
        return seconds + 's' // Show seconds if seconds have passed
    }
}

// gets the current url for server or client
const IS_SERVER = typeof window === "undefined"
export default function getURL(path: string) {
    const baseURL = IS_SERVER
        ? env.NEXT_PUBLIC_APP_URL!
        : window.location.origin
    return new URL(path, baseURL).toString()
}

export function checkURL(value: string) {
    if (!value) return true
    const pattern = new RegExp(
        '^(https?:\\/\\/)?' + // protocol
        '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
        '((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
        '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
        '(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
        '(\\#[-a-z\\d_]*)?$', // fragment locator
        'i'
    )
    try {
        const url = new URL(`${(value.startsWith("http://") || value.startsWith("https://")) ? value : `http://${value}`}`)
        return pattern.test(url.href)
    } catch {
        return false
    }
}