Improve the 'how to buy urls' of the NS tokens (#6888)

backend/canisters/registry/CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [unreleased]
 
+### Changed
+
+- Improve the 'how to buy urls' of the NS tokens ([#6888](https://github.com/open-chat-labs/open-chat/pull/6888))
+
 ## [[2.0.1455](https://github.com/open-chat-labs/open-chat/releases/tag/v2.0.1455-registry)] - 2024-11-15
 
 ### Added

backend/canisters/registry/impl/src/lifecycle/post_upgrade.rs

@@ -1,6 +1,6 @@
 use crate::lifecycle::{init_env, init_state};
 use crate::memory::get_upgrades_memory;
-use crate::Data;
+use crate::{mutate_state, Data};
 use canister_logger::LogEntry;
 use canister_tracing_macros::trace;
 use ic_cdk::post_upgrade;
@@ -25,4 +25,16 @@ fn post_upgrade(args: Args) {
     init_state(env, data, args.wasm_version);
 
     info!(version = %args.wasm_version, "Post-upgrade complete");
+
+    mutate_state(|state| {
+        for token in state.data.tokens.iter_mut() {
+            if token.symbol == "CHAT" {
+                token.how_to_buy_url = "https://oc.app/faq?q=buychat".to_string();
+            } else if token.symbol == "ICP" {
+                token.how_to_buy_url = "https://oc.app/faq?q=buyicp".to_string();
+            } else if token.how_to_buy_url == "https://3ezrj-4yaaa-aaaam-abcha-cai.ic0.app/sns/faq#how-can-i-get-sns-tokens" {
+                token.how_to_buy_url = "https://internetcomputer.org/sns/faq#how-can-i-get-sns-tokens".to_string();
+            }
+        }
+    });
 }

backend/canisters/registry/impl/src/model/tokens.rs

@@ -122,6 +122,10 @@ impl Tokens {
         self.tokens.iter()
     }
 
+    pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut TokenDetails> {
+        self.tokens.iter_mut()
+    }
+
     pub fn exists(&self, ledger_canister_id: CanisterId) -> bool {
         self.get(ledger_canister_id).is_some()
     }