experiment++

Author: ThomasRooney

Makefile

@@ -8,3 +8,7 @@ dist/lib.wasm: $(SOURCE)
 	rm -f dist/*
 	cp "$(shell go env GOROOT)/misc/wasm/wasm_exec.js" dist/wasm_exec.js
 	GOOS=js GOARCH=wasm go build -ldflags="-s -w" -o ./dist/lib.wasm cmd/wasm/main.go
+
+web/wasm/lib.wasm: dist/lib.wasm
+	mkdir -p web/wasm
+	cp dist/lib.wasm web/wasm/lib.wasm

cmd/wasm/main.go

@@ -3,23 +3,43 @@
 package pkg
 
 import (
-	"github.com/speakeasy-api/jsonpath/pkg"
+	"fmt"
+	"github.com/speakeasy-api/jsonpath/pkg/overlay"
+	"gopkg.in/yaml.v3"
 	"syscall/js"
 )
 
-func jsFuncWrapper() js.Func {
+func calculateOverlay() js.Func {
 	return js.FuncOf(func(this js.Value, args []js.Value) interface{} {
 		if len(args) != 2 {
 			return `{"err":""}`
 		}
 		originalYAML := args[0].String()
-		jsonpath := args[1].String()
-		returnValue := pkg.Entry(originalYAML, jsonpath)
-		return returnValue
+		targetYAML := args[1].String()
+		var orig yaml.Node
+		err := yaml.Unmarshal([]byte(originalYAML), &orig)
+		if err != nil {
+			return fmt.Sprintf("{\"err\": \"failed to parse schema: %s\"", err.Error())
+		}
+		var target yaml.Node
+		err = yaml.Unmarshal([]byte(targetYAML), &target)
+		if err != nil {
+			return fmt.Sprintf("{\"err\": \"failed to parse schema: %s\"", err.Error())
+		}
+
+		overlay, err := overlay.Compare("example overlay", &orig, target)
+		if err != nil {
+			return fmt.Sprintf("{\"err\": \"failed to compare schemas: %s\"", err.Error())
+		}
+		out, err := yaml.Marshal(overlay)
+		if err != nil {
+			return fmt.Sprintf("{\"err\": \"failed to marshal schema: %s\"", err.Error())
+		}
+
+		return string(out)
 	})
 }
-
 func main() {
-	js.Global().Set("JSONPath", jsFuncWrapper())
+	js.Global().Set("CalculateOverlay", calculateOverlay())
 	<-make(chan bool)
 }

go.mod

@@ -1,3 +1,18 @@
 module github.com/speakeasy-api/jsonpath
 
-go 1.20
+go 1.21.0
+
+toolchain go1.22.2
+
+require (
+	github.com/speakeasy-api/openapi-overlay v0.6.0
+	github.com/stretchr/testify v1.9.0
+	github.com/vmware-labs/yaml-jsonpath v0.3.2
+	gopkg.in/yaml.v3 v3.0.1
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dprotaso/go-yit v0.0.0-20220510233725-9ba8df137936 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+)

go.sum

@@ -0,0 +1,134 @@
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pkg/exec.go

@@ -1,4 +1,4 @@
-package pkg
+package jsonpath
 
 type Kind int
 

pkg/ast.go renamed to pkg/jsonpath/ast.go

@@ -1,4 +1,4 @@
-package pkg
+package jsonpath
 
 func Entry(yaml string, jsonpath string) string {
 	return "Hello World"

pkg/entry.go renamed to pkg/jsonpath/entry.go

@@ -0,0 +1 @@
+package jsonpath

pkg/jsonpath/exec.go

@@ -1,4 +1,4 @@
-package pkg
+package jsonpath
 
 import (
 	"errors"

pkg/parser.go renamed to pkg/jsonpath/parser.go

@@ -1,4 +1,4 @@
-package pkg
+package jsonpath
 
 import (
 	"testing"