Doomsday Algorithm

Guess (calculate) the day of the week using the Doomsday Algorithm.

How to Run

In the project root, run the Go server

go run main.go

Now, the application is available at http://localhost:8080

API Details

This Go server supports both text/html and application/json responses.

For GET /date, the response struct is DateDisplay:

type Date struct {
	Day   int `json:"day"`
	Month int `json:"month"`
	Year  int `json:"year"`
}

type DateDisplay struct {
	Date    Date   `json:"date"`
	Month_S string `json:"month_s"`
}

For POST /date, the request struct is PostDateRequest:

type PostDateRequest struct {
	Day   int64  `json:"day"`
	Month int64  `json:"month"`
	Year  int64  `json:"year"`
	Guess string `json:"guess"`
}

For POST /date, the response struct is DateAnswer:

type DateAnswer struct {
	Correct bool   `json:"correct"`
	Answer  string `json:"answer"`
}

Tech Stack

• Go (1.25.4)
• HTMX

Motivation

This is a toy project for me to learn Go and HTMX.