flowchart TD
   %% Initiation by the requester
   A[Requester initiates swap via Frontend] --> B[Leptos Server Function]

   %% Approval process from requester to token creator canister
   B --> C[Send icrc2 approve call to Token Creator Canister, e.g. approve 20 USDC]
   
   %% Token creator side checks and setup
   C --> D[Token Creator Canister verifies allocation and token details, last swap price, etc.]
   
   %% For tokens that require external price data (BTC, DOLR, etc.)
   B --> L[Check if token requires external pricing]
   L -- Yes --> M[Invoke External CF Worker]
   M --> N[CF Worker fetches and caches price from Binance, Coinbase, Kongswap]
   N --> D

   %% Swap request action in the token creator canister
   D --> E[Invoke swap_request_action with swap details]

   %% Outcome decision point
   E --> F{Swap Outcome?}
   
   %% Accepted swap flow
   F -- "Accepted" --> G[Execute swap: Exchange tokens and update last swap price, e.g. DOG token new price = 2 USD]
   
   %% Requester cancels swap flow
   F -- "Requester Cancels" --> H[Requester cancels the swap]
   H --> I[Trigger icrc2 approve call with amount = 0, reset/revoke approval]
   
   %% Token creator rejects swap flow
   F -- "Token Creator Rejects" --> J[Token Creator rejects swap request]
   J --> K[Notify requester, approval reset to 0 on notification]

flowchart TD
    Requester[Requester Principal] --> icrc2_approve --> Creator[Creator Canister]

    CreatorPrincipal[Creator Principal] --> swap_request_action --> Creator

flowchart TD
    Caller[Caller = token_creator] --> swap_request_action{SwapRequestActions} --> Accept
    Accept --> token_a
    Accept --> token_b
    Accept --> requester_principal

    token_a --> Swap
    token_b --> Swap
    requester_principal --> Swap

    Swap --> get_token_prices{get_token_prices} --> Priced -->UpdateLastSwappedPrice[Update Last Swap Price]
    get_token_prices --> NotPriced

flowchart TD
   D{"Is Token Owner? (Call deployed_cdao for each ID)"} -- Not Owner --> E["Error: Not Owner"]
   E --> F["Abort Process"]
   J{"Token Type"} -- DOLR or BTC --> K["Check KV Cache for Price"]
   K -- Cached Price Found --> L["Return Cached Price"]
   K -- No Cached Price --> M{"Token Type"}
   M -- BTC --> N["Fetch Price from Coinbase & Binance, Calculate Average"]
   M -- DOLR --> O["Fetch Price from Kong Swap"]
   N --> P["Store Fetched Price in KV Cache"]
   O --> P
   P --> Q["Return Fetched Price"]
   J -- "Other Token (e.g. ABC)" --> R["Obtain Token Creator via sns_init Params"]
   R --> S@{ label: "Call Token Creator's Canister to Retrieve Price" }
   S --> T@{ label: "Return Token Price from Token Creator's Canister" }
   D --> J

   S@{ shape: rect}
   T@{ shape: rect}

flowchart TD
    Caller[Caller = requester_principal] -->
    token_a --> |Deallocate by calling icrc2_approve again and setting the amount to 0|icrc2_approve