From c9e89b23532cb954be5e04ab78da94ab9ca9cadb Mon Sep 17 00:00:00 2001
From: diogo <diogo@riddleandcode.com>
Date: Sun, 18 Jul 2021 17:47:24 +0300
Subject: [PATCH] set max_lookback as configurable

---
 src/invidious.cr                 | 7 +++----
 src/invidious/helpers/helpers.cr | 1 +
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/invidious.cr b/src/invidious.cr
index 9abec64c..fb36ed56 100644
--- a/src/invidious.cr
+++ b/src/invidious.cr
@@ -67,7 +67,6 @@ SOFTWARE = {
 }
 
 YT_POOL      = YoutubeConnectionPool.new(YT_URL, capacity: CONFIG.pool_size, timeout: 2.0, use_quic: CONFIG.use_quic)
-MAX_LOOKBACK = 20
 
 # CLI
 Kemal.config.extra_options do |parser|
@@ -2463,9 +2462,9 @@ end
       next error_json(404, "Playlist does not exist.")
     end
 
-    # includes into the playlist a maximum of 20 videos, before the offset
+    # includes into the playlist a maximum of CONFIG.max_loopback videos, before the offset
     if offset > 0
-      lookback = offset < MAX_LOOKBACK ? offset : MAX_LOOKBACK
+      lookback = offset < CONFIG.max_loopback ? offset : CONFIG.max_loopback
       response = playlist.to_json(offset - lookback, locale)
       json_response = JSON.parse(response)
     else
@@ -2480,7 +2479,7 @@ end
 
       if json_response["videos"].as_a[0]["index"] != offset
         offset = json_response["videos"].as_a[0]["index"].as_i
-        lookback = offset < MAX_LOOKBACK ? offset : MAX_LOOKBACK
+        lookback = offset < CONFIG.max_loopback ? offset : CONFIG.max_loopback
         response = playlist.to_json(offset - lookback, locale)
         json_response = JSON.parse(response)
       end
diff --git a/src/invidious/helpers/helpers.cr b/src/invidious/helpers/helpers.cr
index 99d7f440..d0556cdc 100644
--- a/src/invidious/helpers/helpers.cr
+++ b/src/invidious/helpers/helpers.cr
@@ -73,6 +73,7 @@ class Config
   property output : String = "STDOUT"            # Log file path or STDOUT
   property log_level : LogLevel = LogLevel::Info # Default log level, valid YAML values are ints and strings, see src/invidious/helpers/logger.cr
   property db : DBConfig? = nil                  # Database configuration with separate parameters (username, hostname, etc)
+  property max_loopback : Int32 = 100            # Maximum videos to be loaded into the playlist before the video playing
 
   @[YAML::Field(converter: Preferences::URIConverter)]
   property database_url : URI = URI.parse("")      # Database configuration using 12-Factor "Database URL" syntax