Refactor Config.pushshift to be Option-al

Hopefully I caught all the unwraps that were here before

src/config.rs

@@ -9,6 +9,10 @@ use std::{env::var, fs::read_to_string};
 // first request) and contains the instance settings.
 pub(crate) static CONFIG: Lazy<Config> = Lazy::new(Config::load);
 
+// This serves as the frontend for the Pushshift API - on removed comments, this URL will
+// be the base of a link, to display removed content (on another site).
+pub(crate) static DEFAULT_PUSHSHIFT_FRONTEND: &str = "www.unddit.com";
+
 /// Stores the configuration parsed from the environment variables and the
 /// config file. `Config::Default()` contains None for each setting.
 /// When adding more config settings, add it to `Config::load`,
@@ -59,7 +63,7 @@ pub struct Config {
 	pub(crate) banner: Option<String>,
 
 	#[serde(rename = "LIBREDDIT_PUSHSHIFT_FRONTEND")]
-	pub(crate) pushshift: String,
+	pub(crate) pushshift: Option<String>,
 }
 
 impl Config {
@@ -75,9 +79,6 @@ impl Config {
 		// both are `None`, return a `None` via the `map_or_else` function
 		let parse = |key: &str| -> Option<String> { var(key).ok().map_or_else(|| get_setting_from_config(key, &config), Some) };
 
-		// This serves as the frontend for the Pushshift API - on removed comments, this URL will
-		// be the base of a link, to display removed content (on another site).
-		let default_pushshift_frontend = String::from("www.unddit.com");
 
 		Self {
 			sfw_only: parse("LIBREDDIT_SFW_ONLY"),
@@ -94,7 +95,7 @@ impl Config {
 			default_hide_awards: parse("LIBREDDIT_DEFAULT_HIDE_AWARDS"),
 			default_subscriptions: parse("LIBREDDIT_DEFAULT_SUBSCRIPTIONS"),
 			banner: parse("LIBREDDIT_BANNER"),
-			pushshift: parse("LIBREDDIT_PUSHSHIFT_FRONTEND").unwrap_or(default_pushshift_frontend),
+			pushshift: parse("LIBREDDIT_PUSHSHIFT_FRONTEND"),
 		}
 	}
 }
@@ -115,7 +116,7 @@ fn get_setting_from_config(name: &str, config: &Config) -> Option<String> {
 		"LIBREDDIT_DEFAULT_HIDE_AWARDS" => config.default_hide_awards.clone(),
 		"LIBREDDIT_DEFAULT_SUBSCRIPTIONS" => config.default_subscriptions.clone(),
 		"LIBREDDIT_BANNER" => config.banner.clone(),
-		"LIBREDDIT_PUSHSHIFT_FRONTEND" => Some(config.pushshift.clone()),
+		"LIBREDDIT_PUSHSHIFT_FRONTEND" => config.pushshift.clone(),
 		_ => None,
 	}
 }

src/instance_info.rs

@@ -122,7 +122,7 @@ impl InstanceInfo {
 				["Deploy timestamp", &self.deploy_unix_ts.to_string()],
 				["Compile mode", &self.compile_mode],
 				["SFW only", &convert(&self.config.sfw_only)],
-				["Pushshift frontend", &convert(&Some(self.config.pushshift.clone()))],
+				["Pushshift frontend", &convert(&self.config.pushshift)],
 			])
 			.with_header_row(["Settings"]),
 		);

src/post.rs

@@ -1,6 +1,6 @@
 // CRATES
 use crate::client::json;
-use crate::config::get_setting;
+use crate::config::{get_setting, DEFAULT_PUSHSHIFT_FRONTEND};
 use crate::server::RequestExt;
 use crate::subreddit::{can_access_quarantine, quarantine};
 use crate::utils::{
@@ -126,11 +126,7 @@ fn parse_comments(json: &serde_json::Value, post_link: &str, post_author: &str,
 			let body = if (val(&comment, "author") == "[deleted]" && val(&comment, "body") == "[removed]") || val(&comment, "body") == "[ Removed by Reddit ]" {
 				format!(
 					"<div class=\"md\"><p>[removed] — <a href=\"https://{}{}{}\">view removed comment</a></p></div>",
-					// Safe to unwrap: The get_setting function only returns an option by design,
+					get_setting("LIBREDDIT_PUSHSHIFT_FRONTEND").unwrap_or(String::from(DEFAULT_PUSHSHIFT_FRONTEND)),
-					// for this specific setting, it is a String, not an Option<String>. See
-					// get_setting_from_config() in config.rs - when requesting this specific
-					// setting, it wraps it in a Some, just to match the type signature.
-					get_setting("LIBREDDIT_PUSHSHIFT_FRONTEND").unwrap(),
 					post_link,
 					id
 				)

src/utils.rs

@@ -594,11 +594,7 @@ pub async fn parse_post(post: &serde_json::Value) -> Post {
 	let body = if val(post, "removed_by_category") == "moderator" {
 		format!(
 			"<div class=\"md\"><p>[removed] — <a href=\"https://{}{}\">view removed post</a></p></div>",
-			// Safe to unwrap: The get_setting function only returns an option by design,
+			get_setting("LIBREDDIT_PUSHSHIFT_FRONTEND").unwrap_or(String::from(crate::config::DEFAULT_PUSHSHIFT_FRONTEND)),
-			// for this specific setting, it is a String, not an Option<String>. See
-			// get_setting_from_config() in config.rs - when requesting this specific
-			// setting, it wraps it in a Some, just to match the type signature.
-			get_setting("LIBREDDIT_PUSHSHIFT_FRONTEND").unwrap(),
 			permalink
 		)
 	} else {