Transaction History With Search | Dataford Interview Questions

Build a simplified transaction history screen that fetches data from a mock API, supports pull-to-refresh, and implements local search filtering.

Model API responses as api_responses, a list of transaction lists. Each transaction has id, description, and status. The function performs the initial fetch, processes actions such as search:<query> and refresh, and returns the visible transaction list after each state change. Search matches description or status, case-insensitively. Refresh replaces the current data with the next mock response while preserving the active query.

Input: transaction_history(api_responses, actions).

Output: A list of visible transaction-list snapshots, including the initial fetch.

Constraints

1 <= len(api_responses) <= 1000
1 <= len(api_responses[0]) <= 1000
Each refresh action has a corresponding later API response
Each transaction contains string fields id, description, and status
Actions are either "refresh" or strings beginning with "search:"
Search matching is case-insensitive and uses substring matching

Function Signature

def transaction_history(api_responses, actions):

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