Marvel-Ib / graphql-challenge

Graphql

• LiveUrl

notes

What technology am i using?

• TypeGraphQL
• TypeGoose

All bank codes are supported. examples of banks and there bank code:

• Kuda Bank -- 50211
• First Bank of Nigeria -- 011
• Access Bank -- 044
• GtBank -- 058
• Zenith Bank -- 057
• United Bank for Africa -- 033

Could not use flutterwave and paystack

• there verify account endpoints did not seems to work without being full verified. both threw errors consistently
• had to look for another api and utilize it: https://maylancer.org/api/nuban/
• this api returns account full name in this order : [surname] [first name] [middle name]

Levenshtein Distance algorithm more effective than Damerau–Levenshtein Distance algorithm in account name scenario

• We are trying to ensure that if there was a small error during data entry we are still able to still resolve names
• levenshetein distance operations (insertions, deletions or substitutions, of single characters) is more than enough to detect this small errors
• using damerau-levenshtein algorithm will be an overkill ( if there is a case we have to use it to get a number less than 3 then that definitely means there is a big error in the names

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Queries & mutations

verify user account

Query

mutation {
  verifyUserAccount(input:{
    bankCode: "058",
    bankAccountNumber: "123456789",
    accountName: "surname firstName middleName"
  }){
    bankAccountNumber,
    accountName,
  }
}

Get account name

Query

{
    getAccountName(input:{
     bankCode:"058",
     bankAccountNumber:"123456789"
   })
   {
    accountName,
    bankAccountNumber
   }
 }