refactor: rename error classes for consistency and clarity; update related code and tests

examples/topup_ton.py

@@ -0,0 +1,48 @@
+"""
+Example: top up a Telegram Ads account with TON.
+
+Amount must be an integer between 1 and 1 000 000 000 TON.
+Your wallet must hold at least the topup amount + ~0.056 TON for gas.
+"""
+
+import asyncio
+
+from fragmentapi import ConfigurationError, FragmentClient, UserNotFoundError, WalletError
+
+SEED = "word1 word2 ... word24"
+API_KEY = "YOUR_TONAPI_KEY"
+COOKIES = {
+    "stel_ssid": "YOUR_STEL_SSID",
+    "stel_dt": "YOUR_STEL_DT",
+    "stel_token": "YOUR_STEL_TOKEN",
+    "stel_ton_token": "YOUR_STEL_TON_TOKEN",
+}
+
+USERNAME = "@username"
+AMOUNT = 10  # TON, integer — 1–1 000 000 000
+
+
+async def main() -> None:
+    client = FragmentClient(seed=SEED, api_key=API_KEY, cookies=COOKIES)
+
+    try:
+        result = await client.topup_ton(USERNAME, amount=AMOUNT, show_sender=True)
+    except UserNotFoundError:
+        print(f"User {USERNAME!r} not found on Fragment.")
+        return
+    except WalletError as e:
+        print(f"Wallet error: {e}")
+        return
+    except ConfigurationError as e:
+        print(f"Invalid parameters: {e}")
+        return
+
+    print("TON topped up")
+    print("   %-14s %s" % ("Username:", result.username))
+    print("   %-14s %s TON" % ("Amount:", result.amount))
+    print("   %-14s %s" % ("Transaction:", result.transaction_id))
+    print("   %-14s %s" % ("Timestamp:", result.timestamp))
+
+
+if __name__ == "__main__":
+    asyncio.run(main())