main.go

package main

import (
	"fmt"
	"os"

	"github.com/privacy-scaling-explorations/maci-coordinator/src"
)

func main() {
	// These functions demonstrate two separate checks to detect if the code is being
	// run inside a docker container in debug mode, or production mode!
	//
	// Note: Valid only for docker containers generated using the Makefile command
	firstCheck()
	secondCheck()

	prover := src.Prover{
		ProcessMessagesCircuit: src.Circuit{
			Result: src.Result{},
			Status: src.WaitingForRequest,
		},
		TallyVotesCircuit: src.Circuit{
			Result: src.Result{},
			Status: src.WaitingForRequest,
		},
	}

	r := src.NewRouter(prover)
	r.LoadHTMLFiles("demo/api_demo.html")

	// listen and serve on localhost:8080
	if err := r.Run(); err != nil {
		panic("Failed to run API server")
	}
}

func firstCheck() bool {
	/*
	 * The `debug_mode` environment variable exists only in debug builds, likewise,
	 * `production_mode` variable exists selectively in production builds - use the
	 * existence of these variables to detect container build type (and not values)
	 *
	 * Exactly one of these - `production_mode` or `debug_mode` - is **guaranteed** to
	 * exist for docker builds generated using the Makefile commands!
	 */

	if _, ok := os.LookupEnv("production_mode"); ok {
		fmt.Println("(Check 01): Running in `production` mode!")
		return true
	} else if _, ok := os.LookupEnv("debug_mode"); ok {
		// Could also use a simple `else` statement (above) for docker builds!
		fmt.Println("(Check 01): Running in `debug` mode!")
		return true
	} else {
		fmt.Println("\nP.S. Try running a build generated with the Makefile :)")
		return false
	}
}

func secondCheck() bool {
	/*
	 * There's also a central `__BUILD_MODE__` variable for a dirty checks -- guaranteed
	 * to exist for docker containers generated by the Makefile commands!
	 * The variable will have a value of `production` or `debug` (no capitalization)
	 *
	 * Note: Relates to docker builds generated using the Makefile
	 */

	value := os.Getenv("__BUILD_MODE__")

	// Yes, this if/else could have been written better
	switch value {
	case "production":
		fmt.Println("(Check 02): Running in `production` mode!")
		return true

	case "debug":
		fmt.Println("(Check 02): Running in `debug` mode!")
		return true

	default:
		// Flow ends up here for non-docker builds, or docker builds generated directly
		fmt.Println("Non-makefile build detected :(")
		return false
	}
}