372 lines
10 KiB
Go
372 lines
10 KiB
Go
//go:build js && wasm
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package d2wasm
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import (
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"context"
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"encoding/json"
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"fmt"
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"strings"
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"syscall/js"
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"oss.terrastruct.com/d2/d2ast"
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"oss.terrastruct.com/d2/d2compiler"
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"oss.terrastruct.com/d2/d2format"
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"oss.terrastruct.com/d2/d2graph"
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"oss.terrastruct.com/d2/d2layouts/d2dagrelayout"
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"oss.terrastruct.com/d2/d2layouts/d2elklayout"
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"oss.terrastruct.com/d2/d2lib"
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"oss.terrastruct.com/d2/d2lsp"
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"oss.terrastruct.com/d2/d2oracle"
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"oss.terrastruct.com/d2/d2parser"
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"oss.terrastruct.com/d2/d2renderers/d2fonts"
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"oss.terrastruct.com/d2/d2renderers/d2svg"
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"oss.terrastruct.com/d2/d2renderers/d2svg/appendix"
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"oss.terrastruct.com/d2/lib/log"
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"oss.terrastruct.com/d2/lib/memfs"
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"oss.terrastruct.com/d2/lib/textmeasure"
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"oss.terrastruct.com/d2/lib/urlenc"
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"oss.terrastruct.com/d2/lib/version"
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"oss.terrastruct.com/util-go/go2"
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)
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func GetParentID(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing id argument", Code: 400}
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}
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id := args[0].String()
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mk, err := d2parser.ParseMapKey(id)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 400}
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}
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if len(mk.Edges) > 0 {
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return "", nil
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}
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if mk.Key != nil {
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if len(mk.Key.Path) == 1 {
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return "root", nil
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}
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mk.Key.Path = mk.Key.Path[:len(mk.Key.Path)-1]
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return strings.Join(mk.Key.StringIDA(), "."), nil
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}
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return "", nil
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}
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func GetObjOrder(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing dsl argument", Code: 400}
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}
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dsl := args[0].String()
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g, _, err := d2compiler.Compile("", strings.NewReader(dsl), &d2compiler.CompileOptions{
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UTF16Pos: true,
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})
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 400}
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}
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objOrder, err := d2oracle.GetObjOrder(g, nil)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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return map[string]interface{}{
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"order": objOrder,
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}, nil
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}
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func GetRefRanges(args []js.Value) (interface{}, error) {
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if len(args) < 4 {
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return nil, &WASMError{Message: "missing required arguments", Code: 400}
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}
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var fs map[string]string
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if err := json.Unmarshal([]byte(args[0].String()), &fs); err != nil {
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return nil, &WASMError{Message: "invalid fs argument", Code: 400}
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}
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file := args[1].String()
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key := args[2].String()
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var boardPath []string
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if err := json.Unmarshal([]byte(args[3].String()), &boardPath); err != nil {
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return nil, &WASMError{Message: "invalid boardPath argument", Code: 400}
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}
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ranges, importRanges, err := d2lsp.GetRefRanges(file, fs, boardPath, key)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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return RefRangesResponse{
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Ranges: ranges,
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ImportRanges: importRanges,
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}, nil
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}
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func GetELKGraph(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing JSON argument", Code: 400}
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}
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var input CompileRequest
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if err := json.Unmarshal([]byte(args[0].String()), &input); err != nil {
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return nil, &WASMError{Message: "invalid JSON input", Code: 400}
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}
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if input.FS == nil {
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return nil, &WASMError{Message: "missing 'fs' field in input JSON", Code: 400}
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}
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if _, ok := input.FS["index"]; !ok {
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return nil, &WASMError{Message: "missing 'index' file in input fs", Code: 400}
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}
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fs, err := memfs.New(input.FS)
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("invalid fs input: %s", err.Error()), Code: 400}
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}
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g, _, err := d2compiler.Compile("", strings.NewReader(input.FS["index"]), &d2compiler.CompileOptions{
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UTF16Pos: true,
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FS: fs,
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})
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 400}
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}
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ruler, err := textmeasure.NewRuler()
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("text ruler cannot be initialized: %s", err.Error()), Code: 500}
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}
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err = g.SetDimensions(nil, ruler, nil)
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if err != nil {
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return nil, err
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}
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elk, err := d2elklayout.ConvertGraph(context.Background(), g, nil)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 400}
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}
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return elk, nil
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}
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func Compile(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing JSON argument", Code: 400}
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}
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var input CompileRequest
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if err := json.Unmarshal([]byte(args[0].String()), &input); err != nil {
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return nil, &WASMError{Message: "invalid JSON input", Code: 400}
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}
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if input.FS == nil {
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return nil, &WASMError{Message: "missing 'fs' field in input JSON", Code: 400}
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}
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if _, ok := input.FS["index"]; !ok {
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return nil, &WASMError{Message: "missing 'index' file in input fs", Code: 400}
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}
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fs, err := memfs.New(input.FS)
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("invalid fs input: %s", err.Error()), Code: 400}
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}
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ruler, err := textmeasure.NewRuler()
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("text ruler cannot be initialized: %s", err.Error()), Code: 500}
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}
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ctx := log.WithDefault(context.Background())
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layoutFunc := d2dagrelayout.DefaultLayout
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if input.Opts != nil && input.Opts.Layout != nil {
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switch *input.Opts.Layout {
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case "dagre":
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layoutFunc = d2dagrelayout.DefaultLayout
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case "elk":
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layoutFunc = d2elklayout.DefaultLayout
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default:
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return nil, &WASMError{Message: fmt.Sprintf("layout option '%s' not recognized", *input.Opts.Layout), Code: 400}
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}
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}
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layoutResolver := func(engine string) (d2graph.LayoutGraph, error) {
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return layoutFunc, nil
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}
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renderOpts := &d2svg.RenderOpts{}
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var fontFamily *d2fonts.FontFamily
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if input.Opts != nil && input.Opts.Sketch != nil && *input.Opts.Sketch {
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fontFamily = go2.Pointer(d2fonts.HandDrawn)
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renderOpts.Sketch = input.Opts.Sketch
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}
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if input.Opts != nil && input.Opts.Pad != nil {
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renderOpts.Pad = input.Opts.Pad
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}
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if input.Opts != nil && input.Opts.Center != nil {
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renderOpts.Center = input.Opts.Center
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}
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if input.Opts != nil && input.Opts.ThemeID != nil {
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renderOpts.ThemeID = input.Opts.ThemeID
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}
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if input.Opts != nil && input.Opts.DarkThemeID != nil {
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renderOpts.DarkThemeID = input.Opts.DarkThemeID
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}
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if input.Opts != nil && input.Opts.Scale != nil {
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renderOpts.Scale = input.Opts.Scale
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}
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diagram, g, err := d2lib.Compile(ctx, input.FS["index"], &d2lib.CompileOptions{
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UTF16Pos: true,
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FS: fs,
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Ruler: ruler,
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LayoutResolver: layoutResolver,
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FontFamily: fontFamily,
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}, renderOpts)
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if err != nil {
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if pe, ok := err.(*d2parser.ParseError); ok {
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errs, _ := json.Marshal(pe.Errors)
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return nil, &WASMError{Message: string(errs), Code: 400}
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}
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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input.FS["index"] = d2format.Format(g.AST)
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return CompileResponse{
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FS: input.FS,
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Diagram: *diagram,
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Graph: *g,
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}, nil
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}
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func Render(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing JSON argument", Code: 400}
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}
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var input RenderRequest
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if err := json.Unmarshal([]byte(args[0].String()), &input); err != nil {
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return nil, &WASMError{Message: "invalid JSON input", Code: 400}
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}
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if input.Diagram == nil {
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return nil, &WASMError{Message: "missing 'diagram' field in input JSON", Code: 400}
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}
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ruler, err := textmeasure.NewRuler()
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("text ruler cannot be initialized: %s", err.Error()), Code: 500}
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}
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renderOpts := &d2svg.RenderOpts{}
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if input.Opts != nil && input.Opts.Sketch != nil {
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renderOpts.Sketch = input.Opts.Sketch
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}
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if input.Opts != nil && input.Opts.Pad != nil {
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renderOpts.Pad = input.Opts.Pad
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}
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if input.Opts != nil && input.Opts.Center != nil {
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renderOpts.Center = input.Opts.Center
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}
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if input.Opts != nil && input.Opts.ThemeID != nil {
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renderOpts.ThemeID = input.Opts.ThemeID
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}
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if input.Opts != nil && input.Opts.DarkThemeID != nil {
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renderOpts.DarkThemeID = input.Opts.DarkThemeID
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}
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if input.Opts != nil && input.Opts.Scale != nil {
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renderOpts.Scale = input.Opts.Scale
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}
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out, err := d2svg.Render(input.Diagram, renderOpts)
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if err != nil {
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return nil, &WASMError{Message: fmt.Sprintf("render failed: %s", err.Error()), Code: 500}
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}
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if input.Opts != nil && *input.Opts.ForceAppendix {
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out = appendix.Append(input.Diagram, renderOpts, ruler, out)
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}
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return out, nil
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}
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func GetBoardAtPosition(args []js.Value) (interface{}, error) {
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if len(args) < 3 {
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return nil, &WASMError{Message: "missing required arguments", Code: 400}
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}
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dsl := args[0].String()
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line := args[1].Int()
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column := args[2].Int()
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boardPath, err := d2lsp.GetBoardAtPosition(dsl, d2ast.Position{
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Line: line,
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Column: column,
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})
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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return BoardPositionResponse{BoardPath: boardPath}, nil
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}
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func Encode(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing script argument", Code: 400}
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}
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script := args[0].String()
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encoded, err := urlenc.Encode(script)
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// should never happen
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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return map[string]string{"result": encoded}, nil
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}
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func Decode(args []js.Value) (interface{}, error) {
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if len(args) < 1 {
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return nil, &WASMError{Message: "missing script argument", Code: 400}
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}
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script := args[0].String()
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script, err := urlenc.Decode(script)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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return map[string]string{"result": script}, nil
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}
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func GetVersion(args []js.Value) (interface{}, error) {
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return version.Version, nil
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}
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func GetCompletions(args []js.Value) (interface{}, error) {
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if len(args) < 3 {
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return nil, &WASMError{Message: "missing required arguments", Code: 400}
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}
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text := args[0].String()
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line := args[1].Int()
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column := args[2].Int()
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completions, err := d2lsp.GetCompletionItems(text, line, column)
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if err != nil {
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return nil, &WASMError{Message: err.Error(), Code: 500}
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}
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// Convert to map for JSON serialization
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items := make([]map[string]interface{}, len(completions))
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for i, completion := range completions {
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items[i] = map[string]interface{}{
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"label": completion.Label,
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"kind": int(completion.Kind),
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"detail": completion.Detail,
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"insertText": completion.InsertText,
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}
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}
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return CompletionResponse{
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Items: items,
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}, nil
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}
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