From d4f0663924fe4de436d80ce7c5905fc27734e648 Mon Sep 17 00:00:00 2001
From: Lea Anthony <lea.anthony@gmail.com>
Date: Wed, 11 Nov 2020 20:22:35 +1100
Subject: [PATCH] Better global.d.ts

---
 v2/pkg/parser/generate.go        | 36 ++++++++++++++++++++++++++++----
 v2/pkg/parser/globals.d.template | 26 +++++++++++++++++++++++
 v2/pkg/parser/globals.d.ts       |  6 ------
 3 files changed, 58 insertions(+), 10 deletions(-)
 create mode 100644 v2/pkg/parser/globals.d.template
 delete mode 100644 v2/pkg/parser/globals.d.ts

diff --git a/v2/pkg/parser/generate.go b/v2/pkg/parser/generate.go
index 219747ed..27f048c8 100644
--- a/v2/pkg/parser/generate.go
+++ b/v2/pkg/parser/generate.go
@@ -58,10 +58,8 @@ func (p *Parser) generateModule() error {
 		return err
 	}
 
-	// Copy the globals.d.ts file
-	srcFile = fs.RelativePath("./globals.d.ts")
-	tgtFile = filepath.Join(moduleDir, "globals.d.ts")
-	err = fs.CopyFile(srcFile, tgtFile)
+	// Generate the globals.d.ts file
+	err = generateGlobalsTS(moduleDir, packagesToGenerate)
 	if err != nil {
 		return err
 	}
@@ -178,3 +176,33 @@ func generateIndexJS(dir string, packages []*Package) error {
 
 	return nil
 }
+
+func generateGlobalsTS(dir string, packages []*Package) error {
+
+	// Get path to local file
+	templateFile := fs.RelativePath("./globals.d.template")
+
+	// Load template
+	templateData := fs.MustLoadString(templateFile)
+	packagesTemplate, err := template.New("globals").Parse(templateData)
+	if err != nil {
+		return errors.Wrap(err, "Error creating template")
+	}
+
+	// Execute template
+	var buffer bytes.Buffer
+	err = packagesTemplate.Execute(&buffer, packages)
+	if err != nil {
+		return errors.Wrap(err, "Error generating code")
+	}
+
+	// Calculate target filename
+	indexJS := filepath.Join(dir, "globals.d.ts")
+
+	err = ioutil.WriteFile(indexJS, buffer.Bytes(), 0755)
+	if err != nil {
+		return errors.Wrap(err, "Error writing backend package globals.d.ts file")
+	}
+
+	return nil
+}
diff --git a/v2/pkg/parser/globals.d.template b/v2/pkg/parser/globals.d.template
new file mode 100644
index 00000000..10110443
--- /dev/null
+++ b/v2/pkg/parser/globals.d.template
@@ -0,0 +1,26 @@
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+
+interface Window {
+
+    backend: {
+
+        {{- range . }}{{$packageName:=.Name}}
+        {{- if .HasBoundStructs }}
+        {{ $packageName }}: {
+            {{- range .Structs }}
+            {{- if .IsBound }}
+            {{if .Comments }}{{range .Comments}}// {{ . }}{{end}}{{end}}
+            {{.Name}}: {
+                {{range .Methods}}
+                {{if .Comments }}{{range .Comments}}// {{ . }}{{end}}{{end}}
+                {{.Name}}: ({{.InputsAsTSText $packageName}}) => Promise<{{.OutputsAsTSText $packageName}}>,
+                {{end}}
+            }
+            {{- end}}
+            {{- end}}
+        }
+        {{- end}}
+        {{- end}}
+    }
+}
\ No newline at end of file
diff --git a/v2/pkg/parser/globals.d.ts b/v2/pkg/parser/globals.d.ts
deleted file mode 100644
index 4c441632..00000000
--- a/v2/pkg/parser/globals.d.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
-// This file is automatically generated. DO NOT EDIT
-
-interface Window {
-    backend: any
-}
\ No newline at end of file