545 lines
12 KiB
Go
545 lines
12 KiB
Go
package main
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import (
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"bytes"
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"dc"
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"fmt"
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"go/ast"
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"go/parser"
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"go/token"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"os/exec"
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"strings"
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)
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var api API
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//var httptestdir string
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var tstypemapper map[string]string = make(map[string]string)
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var knownMethods map[string]bool = make(map[string]bool)
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var httpMapper map[string]map[string]string = make(map[string]map[string]string)
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var packageName string = "main"
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func addStruct(a *ast.GenDecl) {
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md := manageComments(a.Doc)
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if md["API"] == "" {
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return
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}
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tp := APIType{
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Name: "",
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Desc: "",
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Fields: make(map[string]*APIField),
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Col: md["COL"],
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}
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tp.Name = a.Specs[0].(*ast.TypeSpec).Name.Name
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log.Printf("Type:" + tp.Name)
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for _, v := range a.Specs[0].(*ast.TypeSpec).Type.(*ast.StructType).Fields.List {
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tp.Fields[v.Names[0].Name] = &APIField{}
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switch x := v.Type.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = x.Name
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case *ast.ArrayType:
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switch z := x.Elt.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = z.Name
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tp.Fields[v.Names[0].Name].Array = true
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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tp.Fields[v.Names[0].Name].Array = true
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case *ast.SelectorExpr:
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tp.Fields[v.Names[0].Name].Type = z.X.(*ast.Ident).Name + "." + z.Sel.Name
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tp.Fields[v.Names[0].Name].Array = true
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}
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case *ast.StarExpr:
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switch y := x.X.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = y.Name
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case *ast.SelectorExpr:
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switch z := y.X.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = z.Name + "." + y.Sel.Name
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}
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}
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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case *ast.SelectorExpr:
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switch z := x.X.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = z.Name + "." + x.Sel.Name
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}
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case *ast.MapType:
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switch z := x.Value.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = ""
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tp.Fields[v.Names[0].Name].Mapkey = x.Key.(*ast.Ident).Name
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tp.Fields[v.Names[0].Name].Mapval = z.Name
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tp.Fields[v.Names[0].Name].Map = true
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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tp.Fields[v.Names[0].Name].Array = true
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}
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default:
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log.Printf("%#v", x)
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}
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}
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api.Types[tp.Name] = &tp
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}
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func addFunction(a *ast.FuncDecl) {
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md := manageComments(a.Doc)
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if md["API"] == "" {
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return
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}
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reqType := &APIParamType{}
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resType := &APIParamType{}
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if len(a.Type.Params.List) > 1 {
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switch x := a.Type.Params.List[1].Type.(type) {
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case *ast.StarExpr:
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reqType.Ispointer = true
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switch y := x.X.(type) {
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case *ast.Ident:
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reqType.Typename = y.Name
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case *ast.SelectorExpr:
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reqType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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}
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case *ast.Ident:
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reqType.Typename = x.Name
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}
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}
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if a.Type.Results != nil && len(a.Type.Results.List) > 0 {
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switch x := a.Type.Results.List[0].Type.(type) {
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case *ast.StarExpr:
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resType.Ispointer = true
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switch y := x.X.(type) {
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case *ast.Ident:
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resType.Typename = y.Name
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case *ast.SelectorExpr:
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resType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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}
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case *ast.Ident:
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resType.Typename = x.Name
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}
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}
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if md["RAW"] == "true" {
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reqType.Typename = md["REQ"]
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resType.Typename = md["RES"]
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}
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verb := md["VERB"]
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if verb == "" {
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verb = http.MethodPost
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}
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fn := APIMethod{
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Desc: a.Name.Name,
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Verb: verb,
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Path: md["PATH"],
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Perm: md["PERM"],
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ReqType: reqType,
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ResType: resType,
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Raw: md["RAW"] == "true",
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}
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api.Methods[a.Name.Name] = &fn
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}
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func processGoServerOutput(api *API) {
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APIParamTypeToString := func(t *APIParamType) string {
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ret := ""
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if t.Ispointer {
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ret = ret + "&"
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}
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ret = ret + t.Typename
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return ret
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}
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b := bytes.Buffer{}
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f := config.Gofname
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os.Remove(f)
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b.WriteString(fmt.Sprintf(`package %s
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import (
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"context"
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"encoding/json"
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"strings"
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"net/http"
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)
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`, packageName))
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b.WriteString(`
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type API struct {
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Mux *http.ServeMux
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Perms map[string]string
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}
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func (a *API) GetPerm(r *http.Request) string {
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return a.Perms[r.Method+"_"+strings.Split(r.RequestURI, "?")[0]]
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}
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func Init() API{
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mux := &http.ServeMux{}
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ret := API{
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Mux: mux,
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Perms: make(map[string]string),
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}
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`)
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for _, m := range api.Methods {
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if m.Perm != "" {
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b.WriteString(fmt.Sprintf(`
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ret.Perms["%s_%s"]="%s"
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`, m.Verb, m.Path, m.Perm))
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}
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}
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b.WriteString("\n\n")
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for p, mv := range httpMapper {
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b.WriteString(fmt.Sprintf(" mux.HandleFunc(\"%s\",func(w http.ResponseWriter, r *http.Request) {\n", strings.Replace(p, "//", "/", -1)))
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b.WriteString(" switch r.Method{\n")
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for v, id := range mv {
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b.WriteString(fmt.Sprintf(" case \"%s\":", v))
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if api.Methods[id].Raw {
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b.WriteString(fmt.Sprintf(" %s(w , r)\n", id))
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} else {
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b.WriteString(fmt.Sprintf(" h_%s(w , r)\n", id))
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}
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}
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b.WriteString(" default:")
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b.WriteString(" http.Error(w,\"Method not allowed\",500)")
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b.WriteString(" }\n")
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b.WriteString("})\n")
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}
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b.WriteString("return ret\n }\n")
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for k, m := range api.Methods {
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if !m.Raw {
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b.WriteString(fmt.Sprintf("\n func h_%s(w http.ResponseWriter, r *http.Request) {\n", k))
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b.WriteString(fmt.Sprintf(
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`
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ctx := r.Context()
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ctx = context.WithValue(r.Context(), "REQ", r)
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ctx = context.WithValue(ctx, "RES", w)
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req := %s{}
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if r.Method!=http.MethodGet && r.Method!=http.MethodHead {
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err := json.NewDecoder(r.Body).Decode(&req)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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}
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res, err := %s(ctx,req)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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w.Header().Add("Content-Type","Application/json")
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err=json.NewEncoder(w).Encode(res)
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if err != nil {
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http.Error(w, err.Error(), 500)
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return
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}
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}
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`, APIParamTypeToString(m.ReqType), k))
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}
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}
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err := ioutil.WriteFile(f, b.Bytes(), 0600)
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dc.Err(err)
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cmd := exec.Command("/bin/sh", "-c", "go fmt "+f)
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bs, err := cmd.Output()
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//dc.Err(err)
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dc.Log(string(bs))
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}
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func processTSClientOutput(f string, api *API) {
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b := bytes.Buffer{}
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if f == "" {
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f = config.Tsfname
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}
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b.WriteString("//#region Base\n")
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b.WriteString(fmt.Sprintf(`
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var apibase="%s";
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export function SetAPIBase(s:string){
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apibase=s;
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}
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export function GetAPIBase(): string{
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return apibase;
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}
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let REGEX_DATE = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)(Z|([+\-])(\d{2}):(\d{2}))$/
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type HTMLMethod = "GET" | "POST" | "PUT" | "DELETE" | "HEAD" | "TRACE"
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async function Invoke(path: string, method: HTMLMethod, body?: any): Promise<Response> {
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let jbody = undefined
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let init = {method: method, mode: "cors", credentials: "include", withCredentials: true}
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if (!!body) {
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let jbody = JSON.stringify(body)
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//@ts-ignore
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init.body = jbody
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}
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if (apibase.endsWith("/") && path.startsWith("/")) {
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path = path.substr(1, path.length)
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}
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let fpath = (apibase + path)
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//@ts-ignore
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let res = await fetch(fpath, init)
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return res
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}
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async function InvokeJSON(path: string, method: HTMLMethod, body?: any): Promise<any> {
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let txt = await InvokeTxt(path, method, body)
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if (txt == "") {
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txt = "{}"
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}
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let ret = JSON.parse(txt, (k: string, v: string) => {
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if (REGEX_DATE.exec(v)) {
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return new Date(v)
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}
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return v
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})
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return ret
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}
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async function InvokeTxt(path: string, method: HTMLMethod, body?: any): Promise<string> {
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//@ts-ignore
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let res = await Invoke(path, method, body)
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let txt = await res.text()
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if (res.status < 200 || res.status >= 400) {
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// webix.alert("API Error:" + res.status + "\n" + txt)
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console.error("API Error:" + res.status + "\n" + txt)
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let e = new Error(txt)
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throw e
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}
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return txt
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}
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async function InvokeOk(path: string, method: HTMLMethod, body?: any): Promise<boolean> {
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//@ts-ignore
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let res = await Invoke(path, method, body)
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let txt = await res.text()
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if (res.status >= 400) {
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console.error("API Error:" + res.status + "\n" + txt)
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return false
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}
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return true
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}
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`, api.BasePath))
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b.WriteString("//#endregion\n\n")
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b.WriteString("//#region Types\n")
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for k, v := range api.Types {
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if v.Desc != "" {
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b.WriteString(fmt.Sprintf("/**\n%s*/\n", v.Desc))
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}
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b.WriteString(fmt.Sprintf("export interface %s {\n", k))
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for kf, f := range v.Fields {
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ftype, ok := tstypemapper[f.Type]
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if !ok {
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ftype = f.Type
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}
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if f.Array {
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ftype = ftype + "[]"
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} else if f.Map {
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fm, ok := tstypemapper[f.Mapkey]
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if !ok {
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fm = f.Mapkey
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}
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fv, ok := tstypemapper[f.Mapval]
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if !ok {
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fv = f.Mapval
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}
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ftype = "{[s:" + fm + "]:" + fv + "}"
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}
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if f.Desc != "" {
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b.WriteString(fmt.Sprintf("\t/**\n%s*/\n", f.Desc))
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}
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b.WriteString(fmt.Sprintf("\t%s:%s\n", strings.ToLower(kf), ftype))
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}
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b.WriteString(fmt.Sprintf("}\n\n"))
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}
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b.WriteString("//#endregion\n\n")
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b.WriteString("//#region Methods\n")
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for k, m := range api.Methods {
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if m.Desc != "" {
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b.WriteString(fmt.Sprintf("/**\n%s*/\n", m.Desc))
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}
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//if m.Raw {
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// {
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// b.WriteString(fmt.Sprintf("export async function API_%s(req:any):Promise<any>{\n", k, m.ReqType))
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// b.WriteString(fmt.Sprintf("\treturn InvokeJSON(\"%s\",\"%s\",req)\n", m.Path, m.Verb))
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// b.WriteString(fmt.Sprintf("}\n\n"))
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// }
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//
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//} else {
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b.WriteString(fmt.Sprintf("export async function %s(req:%s):Promise<%s>{\n", k, m.ReqType.Typename, m.ResType.Typename))
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b.WriteString(fmt.Sprintf("\treturn InvokeJSON(\"%s\",\"%s\",req)\n", m.Path, m.Verb))
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b.WriteString(fmt.Sprintf("}\n\n"))
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//}
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}
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b.WriteString("//#endregion\n")
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err := ioutil.WriteFile(f, b.Bytes(), 0600)
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dc.Err(err)
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}
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//func processHTTPTestOutput(f string, api *API) {
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//
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// for k, m := range api.Methods {
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// fname := path.Join(httptestdir, k+".http")
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// if dc.FileExists(fname) {
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// continue
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// }
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// b := bytes.Buffer{}
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// b.WriteString(fmt.Sprintf(`%s{{BASEURL}}%s
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//Content-Type: application/json
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//Cookie: dc={{COOKIE}}
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//
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//{}
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//
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//###
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//`, m.Verb, api.BasePath+m.Path))
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//
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// err := ioutil.WriteFile(fname, b.Bytes(), 0600)
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// dc.Err(err)
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// }
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//}
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func mapHttp(api *API) {
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for k, v := range api.Methods {
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pathmap, ok := httpMapper[v.Path]
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if !ok {
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httpMapper[v.Path] = make(map[string]string)
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pathmap = httpMapper[v.Path]
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}
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pathmap[v.Verb] = k
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}
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}
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func process(api *API) {
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mapHttp(api)
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processGoServerOutput(api)
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processTSClientOutput("", api)
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}
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func load() {
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api.Types = (make(map[string]*APIType))
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api.Methods = (make(map[string]*APIMethod))
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fset := token.NewFileSet() // positions are relative to fset
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f, err := parser.ParseDir(fset, config.Goimpldir, nil, parser.ParseComments)
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if err != nil {
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panic(err)
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}
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for _, v := range f {
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// Print the AST.
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ast.Inspect(v, func(n ast.Node) bool {
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switch x := n.(type) {
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case *ast.GenDecl:
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if x.Tok == token.TYPE {
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addStruct(x)
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} else {
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return true
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}
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case *ast.File:
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c := manageCommentsGroups(x.Comments)
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log.Printf("%+v", c)
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case *ast.FuncDecl:
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addFunction(x)
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case *ast.ValueSpec:
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if x.Names[0].Name == "BASEPATH" {
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api.BasePath = strings.Replace(x.Values[0].(*ast.BasicLit).Value, "\"", "", -1)
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}
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if x.Names[0].Name == "NAMESPACE" {
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api.Namespace = strings.Replace(x.Values[0].(*ast.BasicLit).Value, "\"", "", -1)
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}
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log.Printf("%#v", x)
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case *ast.Package:
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packageName = x.Name
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default:
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//log.Printf("%#v", x)
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return true
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}
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return true
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})
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}
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}
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func main() {
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loadConfig()
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tstypemapper["time.Time"] = "Date"
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tstypemapper["primitive.ObjectID"] = "string"
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tstypemapper["time.Duration"] = "Date"
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tstypemapper["int"] = "number"
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tstypemapper["int32"] = "number"
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tstypemapper["int64"] = "number"
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tstypemapper["float"] = "number"
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tstypemapper["float64"] = "number"
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tstypemapper["uint8"] = "number"
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tstypemapper["uint16"] = "number"
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tstypemapper["uint32"] = "number"
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tstypemapper["error"] = "Error"
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tstypemapper["bool"] = "boolean"
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tstypemapper["interface{}"] = "any"
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tstypemapper["bson.M"] = "any"
|
|
|
|
os.Remove(config.Gofname)
|
|
load()
|
|
process(&api)
|
|
}
|