import { equalProp } from "@snort/shared"
import type { FlatReqFilter } from "./query-optimizer"
import type { NostrEvent, ReqFilter } from "./nostr"

export function findTag(e: NostrEvent, tag: string) {
  const maybeTag = e.tags.find(evTag => {
    return evTag[0] === tag
  })
  return maybeTag && maybeTag[1]
}

export function findWholeTag(e: NostrEvent, tag: string) {
  const maybeTag = e.tags.find(evTag => {
    return evTag[0] === tag
  })
  return maybeTag
}

export function reqFilterEq(a: FlatReqFilter | ReqFilter, b: FlatReqFilter | ReqFilter): boolean {
  return (
    equalProp(a.ids, b.ids) &&
    equalProp(a.kinds, b.kinds) &&
    equalProp(a.authors, b.authors) &&
    equalProp(a.limit, b.limit) &&
    equalProp(a.since, b.since) &&
    equalProp(a.until, b.until) &&
    equalProp(a.search, b.search) &&
    equalProp(a["#e"], b["#e"]) &&
    equalProp(a["#p"], b["#p"]) &&
    equalProp(a["#t"], b["#t"]) &&
    equalProp(a["#d"], b["#d"]) &&
    equalProp(a["#r"], b["#r"])
  )
}

export function flatFilterEq(a: FlatReqFilter, b: FlatReqFilter): boolean {
  return (
    a.keys === b.keys &&
    a.since === b.since &&
    a.until === b.until &&
    a.limit === b.limit &&
    a.search === b.search &&
    a.ids === b.ids &&
    a.kinds === b.kinds &&
    a.authors === b.authors &&
    a["#e"] === b["#e"] &&
    a["#p"] === b["#p"] &&
    a["#t"] === b["#t"] &&
    a["#d"] === b["#d"] &&
    a["#r"] === b["#r"]
  )
}

export const UrlRegex =
  /((?:http|ftp|https|nostr|web\+nostr|magnet|lnurl[p|w]?|blossom):\/?\/?(?:[\w+?.\w+])+(?:[\p{L}\p{N}~!@#$%^&*()_\-=+\\/?.:;',]*)?(?:[-a-z0-9+&@#/%=~()_|]))/giu

export function splitByUrl(str: string) {
  return str.split(UrlRegex)
}

/**
 * Image file extensions
 */
export const ImageExtensions = ["gif", "jpg", "jpeg", "jfif", "png", "bmp", "webp"]

/**
 * Audio file extensions
 */
export const AudioExtensions = ["wav", "mp3", "ogg", "m4a"]

/**
 * Video file extensions
 */
export const VideoExtensions = ["mp4", "mov", "mkv", "avi", "m4v", "webm", "m3u8"]

/**
 * Converts a file extension into mime type string
 */
export function extensionToMime(e: string) {
  let ext = e.toLowerCase()
  if (ext.startsWith(".")) {
    ext = ext.slice(1)
  }
  if (ImageExtensions.includes(ext)) {
    return `image/${ext}`
  } else if (AudioExtensions.includes(ext)) {
    return `audio/${ext}`
  } else if (VideoExtensions.includes(ext)) {
    return `video/${ext}`
  }
}