SMS Calculator

Analyze a message locally to predict encoding, part count, and the credits it will cost — no network call, no credits spent.

Function	Description
`GetSMSPartInfo(string)`	Returns encoding, length, part count, required credits.
`DetectEncoding(string)`	Returns `EncodingGSM7` or `EncodingUCS2`.


info := sendafrica.GetSMSPartInfo("Hello world")
fmt.Println(info.Encoding, info.Length, info.Parts, info.CreditsRequired)
 
enc := sendafrica.DetectEncoding("Thanks 🙏") // EncodingUCS2

The same analysis is exposed on the client as client.SMS.Analyze(message).

Billing rules

GSM-7 messages fit 160 septets in one part, or 153 septets per part when concatenated.
Unicode messages (emoji, Arabic, Chinese, curly quotes) fit 70 UTF-16 code units in one part, or 67 per part when concatenated.
You are billed one credit per part. A single emoji can force a message into Unicode and change the bill.

Combine with Rates to compute an exact upfront price for a campaign message before you send it.