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Client.go
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//go:build wasm
package app
import "github.com/cookiengineer/gooey/bindings/fetch"
import "bytes"
import "errors"
import "strconv"
import "strings"
type client_state struct {
response *fetch.Response
err error
}
type Client struct {
listeners map[string][]*ClientListener
}
func NewClient() *Client {
var client Client
client.listeners = make(map[string][]*ClientListener)
return &client
}
func (client *Client) AddListener(path string, listener ClientListener) bool {
var result bool
_, ok := client.listeners[path]
if ok == true {
client.listeners[path] = append(client.listeners[path], &listener)
result = true
} else {
client.listeners[path] = make([]*ClientListener, 0)
client.listeners[path] = append(client.listeners[path], &listener)
result = true
}
return result
}
func (client *Client) RemoveListener(path string, listener *ClientListener) bool {
var result bool
if listener != nil {
listeners, ok := client.listeners[path]
if ok == true {
var index int = -1
for l := 0; l < len(listeners); l++ {
if listeners[l].Id == listener.Id {
index = l
break
}
}
if index != -1 {
client.listeners[path] = append(client.listeners[path][:index], client.listeners[path][index+1:]...)
result = true
}
}
} else {
_, ok := client.listeners[path]
if ok == true {
delete(client.listeners, path)
result = true
}
}
return result
}
func (client *Client) Create(path string, payload []byte) (*fetch.Response, error) {
if strings.HasPrefix(path, "/api") {
channel := make(chan *client_state)
go func() {
response, err := fetch.Fetch(path, &fetch.Request{
Method: fetch.MethodPost,
Mode: fetch.ModeSameOrigin,
Cache: fetch.CacheDefault,
Credentials: fetch.CredentialsOmit,
Redirect: fetch.RedirectError,
Headers: map[string]string{
"Accept": "application/json",
"Content-Type": "application/json",
"Content-Length": strconv.Itoa(len(payload)),
},
Body: bytes.NewReader(payload),
})
listeners, ok := client.listeners[path]
if ok == true {
if err == nil {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, response, nil)
}
} else {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, nil, err)
}
}
}
channel <- &client_state{
response: response,
err: err,
}
}()
state := <-channel
return state.response, state.err
} else {
return nil, errors.New("Invalid Path: Expected /api/* prefix")
}
}
func (client *Client) Read(path string) (*fetch.Response, error) {
if strings.HasPrefix(path, "/api") {
channel := make(chan *client_state)
go func() {
response, err := fetch.Fetch(path, &fetch.Request{
Method: fetch.MethodGet,
Mode: fetch.ModeSameOrigin,
Cache: fetch.CacheDefault,
Credentials: fetch.CredentialsOmit,
Redirect: fetch.RedirectError,
Headers: map[string]string{
"Accept": "application/json",
},
})
listeners, ok := client.listeners[path]
if ok == true {
if err == nil {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, response, nil)
}
} else {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, nil, err)
}
}
}
channel <- &client_state{
response: response,
err: err,
}
}()
state := <-channel
return state.response, state.err
} else {
return nil, errors.New("Invalid Path: Expected /api/* prefix")
}
}
func (client *Client) Update(path string, payload []byte) (*fetch.Response, error) {
if strings.HasPrefix(path, "/api") {
channel := make(chan *client_state)
go func() {
response, err := fetch.Fetch(path, &fetch.Request{
Method: fetch.MethodPatch,
Mode: fetch.ModeSameOrigin,
Cache: fetch.CacheDefault,
Credentials: fetch.CredentialsOmit,
Redirect: fetch.RedirectError,
Headers: map[string]string{
"Accept": "application/json",
"Content-Type": "application/json",
"Content-Length": strconv.Itoa(len(payload)),
},
Body: bytes.NewReader(payload),
})
listeners, ok := client.listeners[path]
if ok == true {
if err == nil {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, response, nil)
}
} else {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, nil, err)
}
}
}
channel <- &client_state{
response: response,
err: err,
}
}()
state := <-channel
return state.response, state.err
} else {
return nil, errors.New("Invalid Path: Expected /api/* prefix")
}
}
func (client *Client) Delete(path string, payload []byte) (*fetch.Response, error) {
if strings.HasPrefix(path, "/api") {
channel := make(chan *client_state)
go func() {
response, err := fetch.Fetch(path, &fetch.Request{
Method: fetch.MethodDelete,
Mode: fetch.ModeSameOrigin,
Cache: fetch.CacheDefault,
Credentials: fetch.CredentialsOmit,
Redirect: fetch.RedirectError,
Headers: map[string]string{
"Accept": "application/json",
"Content-Type": "application/json",
"Content-Length": strconv.Itoa(len(payload)),
},
Body: bytes.NewReader(payload),
})
listeners, ok := client.listeners[path]
if ok == true {
if err == nil {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, response, nil)
}
} else {
for l := 0; l < len(listeners); l++ {
listeners[l].Callback(path, nil, err)
}
}
}
channel <- &client_state{
response: response,
err: err,
}
}()
state := <-channel
return state.response, state.err
} else {
return nil, errors.New("Invalid Path: Expected /api/* prefix")
}
}