package ntfy

import (
	"errors"
	"strings"

	"net/http"
)

type Request = http.Request

func SendF(topic, title, message string, fn func(*Request)) (err error) {
	req, err := http.NewRequest("POST",
		"https://ntfy.sh/" + topic, strings.NewReader(message))
	if err != nil {
		return
	}

	req.Header.Set("Markdown", "true")
	req.Header.Set("Title", title)

	fn(req)

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return
	}
	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		return errors.New("Host returned " + resp.Status)
	}

	return
}

func Send(topic, title, message string) error {
	return SendF(topic, title, message, func(r *Request) {})
}

func SendActions(topic, title, message string, actions ...string) error {
	var actionsString string
	for _, a := range actions {
		actionsString += "view," + a + ",clear=false;"
	}

	return SendF(topic, title, message, func(r *Request) {
		r.Header.Set("Actions", actionsString)
	})
}

func SendPrio(topic, title, message, prio string) error {
	return SendF(topic, title, message, func(r *Request) {
		r.Header.Set("Priority", prio)
	})
}

func SendTags(topic, title, message string, tags ...string) error {
	tagsString := strings.Join(tags, ",")
	return SendF(topic, title, message, func(r *Request) {
		r.Header.Set("Tags", tagsString)
	})
}

func SendError(topic, title, message string) error {
	return SendF(topic, title, message, func(r *Request) {
		r.Header.Set("Priority", "urgent")
		r.Header.Set("Tags", "rotating_light,warning")
	})
}