From 3a398bc031f1a1659073208e83d778a357a8243a Mon Sep 17 00:00:00 2001
From: Ruben Beltran del Rio <ruben@unlimited.pizza>
Date: Mon, 10 Apr 2023 15:00:55 +0200
Subject: Use swiftsoup for parsing

---
 Sources/lyricli/lyrics_engine.swift | 67 ++++++++++++++-----------------------
 1 file changed, 26 insertions(+), 41 deletions(-)

(limited to 'Sources')

diff --git a/Sources/lyricli/lyrics_engine.swift b/Sources/lyricli/lyrics_engine.swift
index f0a02db..620e521 100644
--- a/Sources/lyricli/lyrics_engine.swift
+++ b/Sources/lyricli/lyrics_engine.swift
@@ -1,4 +1,5 @@
 import Foundation
+import SwiftSoup
 
 // Given a track, attempts to fetch the lyrics from lyricswiki
 class LyricsEngine {
@@ -11,9 +12,6 @@ class LyricsEngine {
     // 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
 
@@ -25,8 +23,9 @@ class LyricsEngine {
         // 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)&q=\(artist) \(name)") {
+            if let name = track.name.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) {
+
+                if let url = URL(string: "\(apiURL)?access_token=\(clientToken)&q=\(artist)%20\(name)") {
 
                     // We'll lock until the async call is finished
 
@@ -74,18 +73,20 @@ class LyricsEngine {
             if let data = data {
                 if let jsonResponse = try? JSONSerialization.jsonObject(with: data) {
                     if let jsonResponse = jsonResponse as? [String: Any] {
-                        if let hits = jsonResponse["hits"] as? [Any] {
-                            if let firstHit = hits[0] as? [String: Any] {
-                                if let firstHitData = firstHit["result"] as? [String: Any] {
-                                    if let lyricsUrlString = firstHitData["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
+                        if let response = jsonResponse["response"] as? [String:Any] {
+                            if let hits = response["hits"] as? [Any] {
+                                if let firstHit = hits[0] as? [String: Any] {
+                                    if let firstHitData = firstHit["result"] as? [String: Any] {
+                                        if let lyricsUrlString = firstHitData["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
+                                            }
                                         }
                                     }
                                 }
@@ -126,30 +127,14 @@ class LyricsEngine {
     // 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.count))
-
-            for match in matches {
-
-                let nsBody = body as NSString
-                let range = match.range(at: 1)
-                let encodedLyrics = nsBody.substring(with: range)
-
-                let decodedLyrics = decodeLyrics(encodedLyrics)
-
-                completionHandler(decodedLyrics)
-                return
-            }
+        do {
+            let document: Document = try SwiftSoup.parse(body)
+            let lyricsBox = try document.select("div[data-lyrics-container=\"true\"]")
+            try lyricsBox.select("br").after("\\n")
+            let lyrics = try lyricsBox.text()
+            completionHandler(lyrics.replacingOccurrences(of: "\\n", with: "\r\n"))
+        } catch {
+            completionHandler(nil)
         }
-
-        completionHandler(nil)
-    }
-
-    // Escapes the HTML entities and HTML
-    private func decodeLyrics(_ lyrics: String) -> String {
-
-        return lyrics
     }
 }
-- 
cgit