X-Git-Url: https://git.r.bdr.sh/rbdr/lyricli/blobdiff_plain/38d5d6de414ad69d6a7dc744e4aed39c488ba30f..fdafe0d4012af00e0d9cb613a0146924b8fd8eaf:/Sources/lyrics_engine.swift

diff --git a/Sources/lyrics_engine.swift b/Sources/lyrics_engine.swift
deleted file mode 100644
index 27e0e11..0000000
--- a/Sources/lyrics_engine.swift
+++ /dev/null
@@ -1,146 +0,0 @@
-import Foundation
-import HTMLEntities
-
-// Given a track, attempts to fetch the lyrics from lyricswiki
-class LyricsEngine {
-
-    // URL of the API endpoint to use
-    private let apiURL = "https://lyrics.wikia.com/api.php?action=lyrics&func=getSong&fmt=realjson"
-
-    // Method used to call the API
-    private let apiMethod = "GET"
-
-    // Regular expxression used to find the lyrics in the lyricswiki HTML
-    private let lyricsMatcher = "class='lyricbox'>(.+)<div"
-
-    // The track we'll be looking for
-    private let track: Track
-
-    // Fetches the lyrics and returns if found
-    var lyrics: String? {
-
-        var lyrics: String?
-
-        // Encode the track artist and name and finish building the API call URL
-
-        if let artist = track.artist.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) {
-            if let name: String = track.name.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) {
-                if let url = URL(string: "\(apiURL)&artist=\(artist)&song=\(name)") {
-
-                    // We'll lock until the async call is finished
-
-                    var requestFinished = false
-                    let asyncLock = NSCondition()
-                    asyncLock.lock()
-
-                    // Call the API and unlock when you're done
-
-                    fetchLyricsFromAPI(withURL: url, completionHandler: {lyricsResult -> Void in
-                        lyrics = lyricsResult
-                        requestFinished = true
-                        asyncLock.signal()
-                    })
-
-                    while !requestFinished {
-                        asyncLock.wait()
-                    }
-                    asyncLock.unlock()
-                }
-            }
-        }
-
-        return lyrics
-    }
-
-    // Initializes with a track
-    init(withTrack targetTrack: Track) {
-
-        track = targetTrack
-    }
-
-    // Fetch the lyrics URL from the API, triggers the request to fetch the
-    // lyrics page
-    private func fetchLyricsFromAPI(withURL url: URL, completionHandler: @escaping (String?) -> Void) {
-
-        var apiRequest = URLRequest(url: url)
-        apiRequest.httpMethod = "GET"
-
-        let task = URLSession.shared.dataTask(with: apiRequest, completionHandler: {data, _, _ -> Void in
-
-            // If the response is parseable JSON, and has a url, we'll look for
-            // the lyrics in there
-
-            if let data = data {
-                if let jsonResponse = try? JSONSerialization.jsonObject(with: data) {
-                    if let jsonResponse = jsonResponse as? [String: Any] {
-                        if let lyricsUrlString = jsonResponse["url"] as? String {
-                            if let lyricsUrl = URL(string: lyricsUrlString) {
-
-                                // At this point we have a valid wiki url
-                                self.fetchLyricsFromPage(withURL: lyricsUrl, completionHandler: completionHandler)
-                                return
-                            }
-                        }
-                    }
-                }
-            }
-
-            completionHandler(nil)
-        })
-        task.resume()
-    }
-
-    // Fetch the lyrics from the page and send it to the parser
-    private func fetchLyricsFromPage(withURL url: URL, completionHandler: @escaping (String?) -> Void) {
-
-        var pageRequest = URLRequest(url: url)
-        pageRequest.httpMethod = "GET"
-
-        let task = URLSession.shared.dataTask(with: pageRequest, completionHandler: {data, _, _ -> Void in
-
-            // If the response is parseable JSON, and has a url, we'll look for
-            // the lyrics in there
-
-            if let data = data {
-                if let htmlBody = String(data: data, encoding: String.Encoding.utf8) {
-                    self.parseHtmlBody(htmlBody, completionHandler: completionHandler)
-                    return
-                }
-            }
-
-            completionHandler(nil)
-        })
-        task.resume()
-    }
-
-    // Parses the wiki to find the lyrics, decodes the lyrics object
-    private func parseHtmlBody(_ body: String, completionHandler: @escaping (String?) -> Void) {
-
-        // Look for the lyrics lightbox
-
-        if let regex = try? NSRegularExpression(pattern: lyricsMatcher) {
-            let matches = regex.matches(in: body, range: NSRange(location: 0, length: body.characters.count))
-
-            for match in matches {
-
-                let nsBody = body as NSString
-                let range = match.rangeAt(1)
-                let encodedLyrics = nsBody.substring(with: range)
-
-                let decodedLyrics = decodeLyrics(encodedLyrics)
-
-                completionHandler(decodedLyrics)
-                return
-            }
-        }
-
-        completionHandler(nil)
-    }
-
-    // Escapes the HTML entities
-    private func decodeLyrics(_ lyrics: String) -> String {
-
-        let unescapedLyrics = lyrics.htmlUnescape()
-        return unescapedLyrics.replacingOccurrences(of: "<br />", with: "\n")
-    }
-}