Fix: Do not search for wilaya by zip code if it's invalid

[Fcmam5]

In Algeria all ZIP codes are numeric in a form of WILAYA_CODE_XXXX. For example Oran city's code is 31, and it provinces have codes like 31000, 310094 ...

In this line :

leblad/src/api/getWilayaByZipCode.js

Line 18 in 5837b9e

const wilaya = data.find(w => w.postalCodes.includes(zipCode));

We are directly looking for the given zip code even if it's not a valid number. I suggest at least checking if the parameter is a number before searching.

[Fcmam5]

@xxKeefer this could be an issue you can work on 😄 !

[InternetRamen]

Hey! This seems interesting. Could my friend @makebread and I get assigned this?

[InternetRamen]

Or could I work with @xxKeefer ?

[Fcmam5]

@InternetRamen it would be great if you create a validation method (isValidZipCode) and export it like we did with isValidWilayaCode se we can either use it internally or as a utility function. see isValidWilayaCode.

[xxKeefer]

Hey @Fcmam5 I did a bit a of research as I'm not familiar with the Algerian postal system (i'm from Australia :D) it looks like the function getWilayaByZipCode takes a number, my research tells me that some of the zip codes like those with Adrar have a leading zero in the zip code. Does that mean that say if were looking at the zip code for Abani for example ('01027') its looking to receive the number 1027?

[Fcmam5]

Hey @Fcmam5 I did a bit a of research as I'm not familiar with the Algerian postal system (i'm from Australia :D) it looks like the function getWilayaByZipCode takes a number, my research tells me that some of the zip codes like those with Adrar have a leading zero in the zip code. Does that mean that say if were looking at the zip code for Abani for example ('01027') its looking to receive the number 1027?

Yes it make sense! So, the first two digits refers to the Wilaya (city code), and for Adrar it's 01 with the leading zero. But I think that we still need to verify if it's a valid number at least (even though the parameter can be a string).

So we'd expect:

• zipCode='01027' or zipCode=31000 to be valid, and we call our search functions.
• 'zipCode=xy123' to be invalid, so we don't need to run an O(n^2) search :/

Maybe we can for that only using Number.isNaN().

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Glad to have you here helping us @xxKeefer ! That's an honour that our project reached Australia 😄 !

[InternetRamen]

@InternetRamen it would be great if you create a validation method (isValidZipCode) and export it like we did with isValidWilayaCode se we can either use it internally or as a utility function. see isValidWilayaCode.

Thank you for responding. I will try to create the method.

[Fcmam5]

@InternetRamen @xxKeefer already started working on it in #26, would you help us there?

[InternetRamen]

@Fcmam5 Got it

[Fcmam5]

@Fcmam5 Got it

@InternetRamen I just created #27 , I'll add a description there, that one should be a bit challenging as well 😄

[InternetRamen]

@Fcmam5 I'll try my best! Thanks for the opportunity.