package gocli

import (
	"bytes"
	"encoding/json"
	"errors"
	"io/ioutil"
	"net/http"
	"time"
)

var Basepath string = ""
var Host string = ""
var ExtraHeaders map[string]string = make(map[string]string)

func invoke(m string, path string, bodyo interface{}) (*json.Decoder, error) {

	b := &bytes.Buffer{}
	err := json.NewEncoder(b).Encode(bodyo)
	if err != nil {
		return nil, err
	}
	body := bytes.NewReader(b.Bytes())

	req, err := http.NewRequest(m, Host+Basepath+path, body)
	if err != nil {
		return nil, err
	}

	req.Header.Set("Content-type", "application/json")
	for k, v := range ExtraHeaders {
		req.Header.Set(k, v)
	}
	cli := http.Client{}
	res, err := cli.Do(req)
	if err != nil {
		return nil, err
	}

	if res.StatusCode >= 400 {
		bs, err := ioutil.ReadAll(res.Body)
		if err != nil {
			panic(err)
		}
		return nil, errors.New(string(bs))
	}

	ret := json.NewDecoder(res.Body)
	return ret, nil
}

type ARequestStruct struct {
	C time.Time `json:"c"`
	D string    `json:"d"`
	A string    `json:"a"`
	B int64     `json:"b"`
}

type AResponseStruct struct {
	A string    `json:"a"`
	B int64     `json:"b"`
	C time.Time `json:"c"`
	D string    `json:"d"`
}

type AStr struct {
	A string   `json:"a"`
	B []string `json:"b"`
}

type AStr2 struct {
	X string          `json:"x"`
	Y []string        `json:"y"`
	Z []AStr          `json:"z"`
	W map[string]AStr `json:"w"`
}

func SomeAPI3(req *AStr) (res []*AStr, err error) {
	var dec *json.Decoder
	dec, err = invoke("POST", "/someapi3", req)
	if err != nil {
		return
	}
	ret := []*AStr{}
	err = dec.Decode(&ret)
	if err != nil {
		return nil, err
	}
	return ret, err
}
func SomeAPI(req *AStr) (res []*AStr, err error) {
	var dec *json.Decoder
	dec, err = invoke("PUT", "/someapi", req)
	if err != nil {
		return
	}
	ret := []*AStr{}
	err = dec.Decode(&ret)
	if err != nil {
		return nil, err
	}
	return ret, err
}
func SomeAPI2(req *AStr) (res []*AStr, err error) {
	var dec *json.Decoder
	dec, err = invoke("POST", "/someapi", req)
	if err != nil {
		return
	}
	ret := []*AStr{}
	err = dec.Decode(&ret)
	if err != nil {
		return nil, err
	}
	return ret, err
}