refactor(unlock): restructure media unlock checker (#5044)

- Split the monolithic unlock checker into a module tree (mod.rs:9–133), wiring service-specific tasks while keeping exported Tauri commands untouched.
- Centralize shared data and helpers in types.rs (1–40) and utils.rs (1–21) for reusable timestamp and emoji logic.
- Move each provider’s logic into its own file (bilibili.rs, disney_plus.rs, netflix.rs, etc.), preserving behavior and making future additions or fixes localized.

src-tauri/src/cmd/media_unlock_checker/youtube.rs

@@ -0,0 +1,82 @@
+use regex::Regex;
+use reqwest::Client;
+
+use crate::{logging, utils::logging::Type};
+
+use super::UnlockItem;
+use super::utils::{country_code_to_emoji, get_local_date_string};
+
+pub(super) async fn check_youtube_premium(client: &Client) -> UnlockItem {
+    let url = "https://www.youtube.com/premium";
+
+    match client.get(url).send().await {
+        Ok(response) => {
+            if let Ok(body) = response.text().await {
+                let body_lower = body.to_lowercase();
+
+                if body_lower.contains("youtube premium is not available in your country") {
+                    return UnlockItem {
+                        name: "Youtube Premium".to_string(),
+                        status: "No".to_string(),
+                        region: None,
+                        check_time: Some(get_local_date_string()),
+                    };
+                }
+
+                if body_lower.contains("ad-free") {
+                    let re = match Regex::new(r#"id="country-code"[^>]*>([^<]+)<"#) {
+                        Ok(re) => re,
+                        Err(e) => {
+                            logging!(
+                                error,
+                                Type::Network,
+                                "Failed to compile YouTube Premium regex: {}",
+                                e
+                            );
+                            return UnlockItem {
+                                name: "Youtube Premium".to_string(),
+                                status: "Failed".to_string(),
+                                region: None,
+                                check_time: Some(get_local_date_string()),
+                            };
+                        }
+                    };
+                    let region = re.captures(&body).and_then(|caps| {
+                        caps.get(1).map(|m| {
+                            let country_code = m.as_str().trim();
+                            let emoji = country_code_to_emoji(country_code);
+                            format!("{emoji}{country_code}")
+                        })
+                    });
+
+                    return UnlockItem {
+                        name: "Youtube Premium".to_string(),
+                        status: "Yes".to_string(),
+                        region,
+                        check_time: Some(get_local_date_string()),
+                    };
+                }
+
+                UnlockItem {
+                    name: "Youtube Premium".to_string(),
+                    status: "Failed".to_string(),
+                    region: None,
+                    check_time: Some(get_local_date_string()),
+                }
+            } else {
+                UnlockItem {
+                    name: "Youtube Premium".to_string(),
+                    status: "Failed".to_string(),
+                    region: None,
+                    check_time: Some(get_local_date_string()),
+                }
+            }
+        }
+        Err(_) => UnlockItem {
+            name: "Youtube Premium".to_string(),
+            status: "Failed".to_string(),
+            region: None,
+            check_time: Some(get_local_date_string()),
+        },
+    }
+}