package main

import (
	"context"
	"flag"
	"fmt"
	"io"
	"log"
	"net/http"
	"os"

	"github.com/google/subcommands"
)

type handlerDeleteCmd struct{}

func (handlerDeleteCmd) SetFlags(fs *flag.FlagSet) {}
func (handlerDeleteCmd) Name() string              { return "delete" }
func (handlerDeleteCmd) Synopsis() string          { return "delete a handler" }
func (handlerDeleteCmd) Usage() string {
	return `wasmcloud delete <handler-name>

$ wasmcloud delete filename.wasm

Deletes a handler on wasmcloud. Please run this with care. No data loss will
happen, but support will need to be contacted.

Flags:
`
}

func (h handlerDeleteCmd) Execute(ctx context.Context, fs *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
	if fs.NArg() != 1 {
		fmt.Println("usage: wasmcloud delete <handler-name>")
		return subcommands.ExitUsageError
	}

	hname := fs.Arg(0)

	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, *apiServer+"/api/handler/delete?name="+hname, nil)
	if err != nil {
		log.Fatal(err)
	}
	withAPI(req)

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		log.Fatal(err)
	}

	if resp.StatusCode != http.StatusNoContent {
		io.Copy(os.Stdout, resp.Body)
		return subcommands.ExitFailure
	}

	fmt.Println("deleted handler", hname)

	return subcommands.ExitSuccess
}