Add sqlite plugin

Add plugin scripts to asset server
Add InjectJS support in plugins

.gitignore

@@ -34,3 +34,4 @@ v2/cmd/wails/internal/commands/initialise/templates/testtemplates/
 
 /v3/.task
 /v3/examples/build/bin/testapp
+/websitev3/site/

scripts/sync-translated-documents.sh

@@ -2,4 +2,4 @@
 
 cd ../website
 
-npx @crowdin/cli@latest pull -b master
+npx @crowdin/cli@latest pull -b master --export-only-approved

v2/internal/frontend/desktop/windows/go-webview2/pkg/edge/corewebview2.go

@@ -4,6 +4,7 @@
 package edge
 
 import (
+	"fmt"
 	"log"
 	"runtime"
 	"syscall"
@@ -249,7 +250,7 @@ func (e *ICoreWebView2Environment) CreateWebResourceResponse(content []byte, sta
 		return nil, err
 	}
 	var response *ICoreWebView2WebResourceResponse
-	_, _, err = e.vtbl.CreateWebResourceResponse.Call(
+	hr, _, err := e.vtbl.CreateWebResourceResponse.Call(
 		uintptr(unsafe.Pointer(e)),
 		stream,
 		uintptr(statusCode),
@@ -257,7 +258,14 @@ func (e *ICoreWebView2Environment) CreateWebResourceResponse(content []byte, sta
 		uintptr(unsafe.Pointer(_headers)),
 		uintptr(unsafe.Pointer(&response)),
 	)
-	if err != windows.ERROR_SUCCESS {
+	if windows.Handle(hr) != windows.S_OK {
+		return nil, syscall.Errno(hr)
+	}
+
+	if response == nil {
+		if err == nil {
+			err = fmt.Errorf("unknown error")
+		}
 		return nil, err
 	}
 	return response, nil

v2/internal/frontend/devserver/devserver.go

@@ -62,9 +62,13 @@ func (d *DevWebServer) Run(ctx context.Context) error {
 		return err
 	}
 
+	var myLogger assetserver.Logger
+	if _logger := ctx.Value("logger"); _logger != nil {
+		myLogger = _logger.(*logger.Logger)
+	}
+
 	var assetHandler http.Handler
 	var wsHandler http.Handler
-	var myLogger *logger.Logger
 
 	_fronendDevServerURL, _ := ctx.Value("frontenddevserverurl").(string)
 	if _fronendDevServerURL == "" {
@@ -73,9 +77,6 @@ func (d *DevWebServer) Run(ctx context.Context) error {
 			return c.String(http.StatusOK, assetdir)
 		})
 
-		if _logger := ctx.Value("logger"); _logger != nil {
-			myLogger = _logger.(*logger.Logger)
-		}
 		var err error
 		assetHandler, err = assetserver.NewAssetHandler(assetServerConfig, myLogger)
 		if err != nil {

v2/pkg/assetserver/assetserver.go

@@ -2,8 +2,11 @@ package assetserver
 
 import (
 	"bytes"
+	"fmt"
+	"math/rand"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 
 	"golang.org/x/net/html"
 
@@ -42,6 +45,9 @@ type AssetServer struct {
 	// Use http based runtime
 	runtimeHandler RuntimeHandler
 
+	// plugin scripts
+	pluginScripts map[string]string
+
 	assetServerWebView
 }
 
@@ -89,6 +95,16 @@ func (d *AssetServer) UseRuntimeHandler(handler RuntimeHandler) {
 	d.runtimeHandler = handler
 }
 
+func (d *AssetServer) AddPluginScript(pluginName string, script string) {
+	if d.pluginScripts == nil {
+		d.pluginScripts = make(map[string]string)
+	}
+	pluginName = strings.ReplaceAll(pluginName, "/", "_")
+	pluginName = html.EscapeString(pluginName)
+	pluginScriptName := fmt.Sprintf("/plugin_%s_%d.js", pluginName, rand.Intn(100000))
+	d.pluginScripts[pluginScriptName] = script
+}
+
 func (d *AssetServer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	if isWebSocket(req) {
 		// Forward WebSockets to the distinct websocket handler if it exists
@@ -149,6 +165,11 @@ func (d *AssetServer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 		d.writeBlob(rw, path, content)
 
 	default:
+		// Check if this is a plugin script
+		if script, ok := d.pluginScripts[path]; ok {
+			d.writeBlob(rw, path, []byte(script))
+			return
+		}
 		d.handler.ServeHTTP(rw, req)
 	}
 }
@@ -174,6 +195,13 @@ func (d *AssetServer) processIndexHTML(indexHTML []byte) ([]byte, error) {
 		return nil, err
 	}
 
+	// Inject plugins
+	for scriptName := range d.pluginScripts {
+		if err := insertScriptInHead(htmlNode, scriptName); err != nil {
+			return nil, err
+		}
+	}
+
 	var buffer bytes.Buffer
 	err = html.Render(&buffer, htmlNode)
 	if err != nil {

v3/TODO.md

@@ -41,4 +41,9 @@ Informal and incomplete list of things needed in v3.
 ## Runtime
 
 - [ ] To log or not to log?
-- [ ] Unify cross-platform events, eg. `onClose`
+- [ ] Unify cross-platform events, eg. `onClose`
+
+## Plugins
+
+- [ ] Move logins to `v3/plugins`
+- [ ] Expose application logger to plugins

v3/V3 Changes.md

@@ -108,3 +108,75 @@ This attribute specifies which javascript event should trigger the action. The d
 <button data-wml-event="hover-box" data-wml-trigger="mouseover">Hover over me!</button>
 ```
 
+## Plugins
+
+Plugins are a way to extend the functionality of your Wails application.
+
+### Creating a plugin
+
+Plugins are standard Go structure that adhere to the following interface:
+
+```go
+type Plugin interface {
+    Name() string
+    Init(*application.App) error
+    Shutdown() 
+    CallableByJS() []string
+    InjectJS() string
+}
+```
+
+The `Name()` method returns the name of the plugin. This is used for logging purposes.
+
+The `Init(*application.App) error` method is called when the plugin is loaded. The `*application.App`
+parameter is the application that the plugin is being loaded into. Any errors will prevent
+the application from starting.
+
+The `Shutdown()` method is called when the application is shutting down.
+
+The `CallableByJS()` method returns a list of exported functions that can be called from
+the frontend. These method names must exactly match the names of the methods exported
+by the plugin.
+
+The `InjectJS()` method returns JavaScript that should be injected into all windows as they are created. This is useful for adding custom JavaScript functions that complement the plugin.
+
+### Tips
+
+#### Enums
+
+In Go, enums are often defined as a type and a set of constants. For example:
+
+```go
+type MyEnum int
+
+const (
+    MyEnumOne MyEnum = iota
+    MyEnumTwo
+    MyEnumThree
+)
+```
+
+Due to incompatibility between Go and JavaScript, custom types cannot be used in this way. The best strategy is to use a type alias for float64:
+
+```go
+type MyEnum = float64
+
+const (
+    MyEnumOne MyEnum = iota
+    MyEnumTwo
+    MyEnumThree
+)
+```
+
+In Javascript, you can then use the following:
+
+```js
+const MyEnum = {
+    MyEnumOne: 0,
+    MyEnumTwo: 1,
+    MyEnumThree: 2
+}
+```
+
+- Why use `float64`? Can't we use `int`? 
+  - Because JavaScript doesn't have a concept of `int`. Everything is a `number`, which translates to `float64` in Go. There are also restrictions on casting types in Go's reflection package, which means using `int` doesn't work. 

v3/cmd/wails/main.go

@@ -25,6 +25,11 @@ func main() {
 	generate.NewSubCommandFunction("icons", "Generate icons", commands.GenerateIcons)
 	generate.NewSubCommandFunction("syso", "Generate Windows .syso file", commands.GenerateSyso)
 	generate.NewSubCommandFunction("bindings", "Generate bindings + models", commands.GenerateBindings)
+	plugin := app.NewSubCommand("plugin", "Plugin tools")
+	//plugin.NewSubCommandFunction("list", "List plugins", commands.PluginList)
+	plugin.NewSubCommandFunction("init", "Initialise a new plugin", commands.PluginInit)
+	//plugin.NewSubCommandFunction("add", "Add a plugin", commands.PluginAdd)
+
 	err := app.Run()
 	if err != nil {
 		pterm.Error.Println(err)

v3/examples/binding/go.mod

@@ -5,7 +5,6 @@ go 1.20
 require github.com/wailsapp/wails/v3 v3.0.0-alpha.0
 
 require (
-	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/leaanthony/slicer v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
@@ -14,8 +13,9 @@ require (
 	github.com/wailsapp/mimetype v1.4.1 // indirect
 	github.com/wailsapp/wails/v2 v2.3.2-0.20230117193915-45c3a501d9e6 // indirect
 	golang.org/x/exp v0.0.0-20220930202632-ec3f01382ef9 // indirect
-	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
+	golang.org/x/net v0.7.0 // indirect
 )
 
 replace github.com/wailsapp/wails/v3 => ../..
-replace github.com/wailsapp/wails/v2 => ../../../v2
+
+replace github.com/wailsapp/wails/v2 => ../../../v2

v3/examples/binding/go.sum

@@ -2,8 +2,6 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
-github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/leaanthony/slicer v1.5.0 h1:aHYTN8xbCCLxJmkNKiLB6tgcMARl4eWmH9/F+S/0HtY=
@@ -22,19 +20,14 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
 github.com/wailsapp/mimetype v1.4.1 h1:pQN9ycO7uo4vsUUuPeHEYoUkLVkaRntMnHJxVwYhwHs=
 github.com/wailsapp/mimetype v1.4.1/go.mod h1:9aV5k31bBOv5z6u+QP8TltzvNGJPmNJD4XlAL3U+j3o=
-github.com/wailsapp/wails/v2 v2.3.2-0.20230117193915-45c3a501d9e6 h1:Wn+nhnS+VytzE0PegUzSh4T3hXJCtggKGD/4U5H9+wQ=
-github.com/wailsapp/wails/v2 v2.3.2-0.20230117193915-45c3a501d9e6/go.mod h1:zlNLI0E2c2qA6miiuAHtp0Bac8FaGH0tlhA19OssR/8=
 golang.org/x/exp v0.0.0-20220930202632-ec3f01382ef9 h1:RjggHMcaTVp0LOVZcW0bo8alwHrOaCrGUDgfWUHhnN4=
 golang.org/x/exp v0.0.0-20220930202632-ec3f01382ef9/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b h1:PxfKdU9lEEDYjdIzOtC4qFWgkU2rGHdKlKowJSMN9h0=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.7.0 h1:rJrUqqhjsgNp7KqAIc25s9pZnjU7TUcSY7HcVZjdn1g=
+golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

v3/examples/contextmenus/main.go

@@ -20,13 +20,13 @@ func main() {
 		Mac: application.MacOptions{
 			ApplicationShouldTerminateAfterLastWindowClosed: true,
 		},
+		Assets: application.AssetOptions{
+			FS: assets,
+		},
 	})
 
 	mainWindow := app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Context Menu Demo",
-		Assets: application.AssetOptions{
-			FS: assets,
-		},
 		Mac: application.MacWindow{
 			Backdrop:                application.MacBackdropTranslucent,
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,
@@ -36,9 +36,6 @@ func main() {
 
 	app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Context Menu Demo",
-		Assets: application.AssetOptions{
-			FS: assets,
-		},
 		Mac: application.MacWindow{
 			Backdrop:                application.MacBackdropTranslucent,
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,

v3/examples/drag-n-drop/main.go

@@ -20,13 +20,13 @@ func main() {
 		Mac: application.MacOptions{
 			ApplicationShouldTerminateAfterLastWindowClosed: true,
 		},
+		Assets: application.AssetOptions{
+			FS: assets,
+		},
 	})
 
 	window := app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Drag-n-drop Demo",
-		Assets: application.AssetOptions{
-			FS: assets,
-		},
 		Mac: application.MacWindow{
 			Backdrop:                application.MacBackdropTranslucent,
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,

v3/examples/events/main.go

@@ -21,6 +21,9 @@ func main() {
 		Mac: application.MacOptions{
 			ApplicationShouldTerminateAfterLastWindowClosed: true,
 		},
+		Assets: application.AssetOptions{
+			FS: assets,
+		},
 	})
 
 	app.Events.On("myevent", func(e *application.CustomEvent) {
@@ -40,9 +43,6 @@ func main() {
 
 	app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Events Demo",
-		Assets: application.AssetOptions{
-			FS: assets,
-		},
 		Mac: application.MacWindow{
 			Backdrop:                application.MacBackdropTranslucent,
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,
@@ -51,9 +51,6 @@ func main() {
 	})
 	app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Events Demo",
-		Assets: application.AssetOptions{
-			FS: assets,
-		},
 		Mac: application.MacWindow{
 			Backdrop:                application.MacBackdropTranslucent,
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,

v3/examples/plain/main.go

@@ -15,9 +15,15 @@ func main() {
 		Mac: application.MacOptions{
 			ApplicationShouldTerminateAfterLastWindowClosed: true,
 		},
+		Assets: application.AssetOptions{
+			Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				w.WriteHeader(http.StatusOK)
+				w.Write([]byte(`<html><head><title>Plain Bundle</title></head><body><div class="main"><h1>Plain Bundle</h1><p>This is a plain bundle. It has no frontend code but this was Served by the AssetServer's Handler.</p><br/><br/><p data-wml-event="clicked">Clicking this paragraph emits an event...<p></div></body></html>`))
+			}),
+		},
 	})
 	// Create window
-	myWindow := app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
+	app.NewWebviewWindowWithOptions(&application.WebviewWindowOptions{
 		Title: "Plain Bundle",
 		CSS:   `body { background-color: rgba(255, 255, 255, 0); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif; user-select: none; -ms-user-select: none; -webkit-user-select: none; } .main { color: white; margin: 20%; }`,
 		Mac: application.MacWindow{
@@ -26,12 +32,6 @@ func main() {
 			TitleBar:                application.MacTitleBarHiddenInsetUnified,
 		},
 		URL: "/",
-		Assets: application.AssetOptions{
-			Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-				w.WriteHeader(http.StatusOK)
-				w.Write([]byte(`<html><head><title>Plain Bundle</title></head><body><div class="main"><h1>Plain Bundle</h1><p>This is a plain bundle. It has no frontend code but this was Served by the AssetServer's Handler.</p><br/><br/><p data-wml-event="clicked">Clicking this paragraph emits an event...<p></div></body></html>`))
-			}),
-		},
 	})
 
 	app.Events.On("clicked", func(_ *application.CustomEvent) {

v3/examples/plugins/assets/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+HELLO!
+</body>
+</html>

v3/examples/plugins/go.mod

@@ -0,0 +1,40 @@
+module plugin_demo
+
+go 1.20
+
+require github.com/wailsapp/wails/v3 v3.0.0-alpha.0
+
+require (
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/leaanthony/slicer v1.5.0 // indirect
+	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pkg/browser v0.0.0-20210706143420-7d21f8c997e2 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	github.com/samber/lo v1.37.0 // indirect
+	github.com/wailsapp/mimetype v1.4.1 // indirect
+	github.com/wailsapp/wails/v2 v2.3.2-0.20230117193915-45c3a501d9e6 // indirect
+	golang.org/x/exp v0.0.0-20220930202632-ec3f01382ef9 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/tools v0.1.12 // indirect
+	lukechampine.com/uint128 v1.2.0 // indirect
+	modernc.org/cc/v3 v3.40.0 // indirect
+	modernc.org/ccgo/v3 v3.16.13 // indirect
+	modernc.org/libc v1.22.3 // indirect
+	modernc.org/mathutil v1.5.0 // indirect
+	modernc.org/memory v1.5.0 // indirect
+	modernc.org/opt v0.1.3 // indirect
+	modernc.org/sqlite v1.21.0 // indirect
+	modernc.org/strutil v1.1.3 // indirect
+	modernc.org/token v1.0.1 // indirect
+)
+
+replace github.com/wailsapp/wails/v3 => ../..
+
+replace github.com/wailsapp/wails/v2 => ../../../v2

v3/examples/plugins/go.sum

@@ -0,0 +1,74 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
+github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
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v3/examples/plugins/main.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"embed"
+	"github.com/wailsapp/wails/v3/pkg/application"
+	"github.com/wailsapp/wails/v3/plugins/browser"
+	"github.com/wailsapp/wails/v3/plugins/kvstore"
+	"github.com/wailsapp/wails/v3/plugins/log"
+	"github.com/wailsapp/wails/v3/plugins/sqlite"
+	"os"
+	"plugin_demo/plugins/hashes"
+)
+
+//go:embed assets/*
+var assets embed.FS
+
+func main() {
+
+	app := application.New(application.Options{
+		Name:        "Plugin Demo",
+		Description: "A demo of the plugins API",
+		Mac: application.MacOptions{
+			ApplicationShouldTerminateAfterLastWindowClosed: true,
+		},
+		Plugins: map[string]application.Plugin{
+			"hashes":  hashes.NewPlugin(),
+			"browser": browser.NewPlugin(),
+			"log":     log.NewPlugin(),
+			"sqlite":  sqlite.NewPlugin(&sqlite.Config{}),
+			"kvstore": kvstore.NewPlugin(&kvstore.Config{
+				Filename: "store.json",
+				AutoSave: true,
+			}),
+		},
+		Assets: application.AssetOptions{
+			FS: assets,
+		},
+	})
+
+	window := app.NewWebviewWindow()
+	window.ToggleDevTools()
+
+	err := app.Run()
+
+	if err != nil {
+		println(err.Error())
+		os.Exit(1)
+	}
+}

v3/examples/plugins/plugins/hashes/README.md

@@ -0,0 +1,31 @@
+# Hashes Plugin
+
+This example plugin provides a way to generate hashes of strings.
+
+## Usage
+
+Add the plugin to the `Plugins` option in the Applications options:
+
+```go
+    Plugins: map[string]application.Plugin{
+        "hashes": hashes.NewPlugin(),
+    },
+```
+
+You can then call the Generate method from the frontend:
+
+```js
+    wails.Plugin("hashes","Generate","hello world").then((result) => console.log(result))
+```
+
+This method returns a struct with the following fields:
+
+```typescript
+    interface Hashes {
+        md5: string;
+        sha1: string;
+        sha256: string;
+    }
+```
+
+A TypeScript definition file is provided for this interface.

v3/examples/plugins/plugins/hashes/hashes.d.ts

@@ -0,0 +1,8 @@
+
+export namespace HashesPlugin {
+  export interface Hashes {
+    md5: string;
+    sha1: string;
+    sha256: string;
+  }
+}