go-lemmy/cmd/gen/generator/routes.go

94 lines
2.2 KiB
Go

package generator
import (
"io"
"strings"
"github.com/dave/jennifer/jen"
"go.elara.ws/go-lemmy/cmd/gen/extractor"
)
type RoutesGenerator struct {
w io.Writer
PkgName string
}
func NewRoutes(w io.Writer, pkgName string) *RoutesGenerator {
return &RoutesGenerator{w, pkgName}
}
func (r *RoutesGenerator) Generate(routes []extractor.Route) error {
f := jen.NewFile(r.PkgName)
f.HeaderComment("Code generated by go.elara.ws/go-lemmy/cmd/gen (routes generator). DO NOT EDIT.")
for _, r := range routes {
f.Comment(r.Summary)
f.Func().Params(
jen.Id("c").Id("*Client"),
).Id(transformName(r.Name)).ParamsFunc(func(g *jen.Group) {
g.Id("ctx").Qual("context", "Context")
if r.ParamsName != "" {
g.Id("data").Id(r.ParamsName)
}
}).ParamsFunc(func(g *jen.Group) {
if r.ReturnName != "" {
g.Op("*").Id(r.ReturnName)
}
g.Error()
}).BlockFunc(func(g *jen.Group) {
data := jen.Id("data")
// If there are no parameters, set the data to nil
if r.ParamsName == "" {
data = jen.Nil()
}
returnName := r.ReturnName
if returnName == "" {
returnName = "emptyResponse"
}
g.Id("resData").Op(":=").Op("&").Id(returnName).Block()
funcName := "req"
if r.Method == "GET" {
funcName = "getReq"
}
g.List(jen.Id("res"), jen.Err()).Op(":=").Id("c").Dot(funcName).Params(
jen.Id("ctx"), jen.Lit(r.Method), jen.Lit(r.Path), data, jen.Op("&").Id("resData"),
)
g.If(jen.Err().Op("!=").Nil()).BlockFunc(func(g *jen.Group) {
if returnName == "emptyResponse" {
g.Return(jen.Err())
} else {
g.Return(jen.Nil(), jen.Err())
}
})
g.Err().Op("=").Id("resError").Params(jen.Id("res"), jen.Id("resData").Dot("lemmyResponse"))
g.If(jen.Err().Op("!=").Nil()).BlockFunc(func(g *jen.Group) {
if returnName == "emptyResponse" {
g.Return(jen.Err())
} else {
g.Return(jen.Nil(), jen.Err())
}
})
if returnName == "emptyResponse" {
g.Return(jen.Nil())
} else {
g.Return(jen.Id("resData"), jen.Nil())
}
})
}
return f.Render(r.w)
}
func transformName(s string) string {
s = strings.ToUpper(s[:1]) + s[1:]
s = strings.TrimPrefix(s, "Get")
s = strings.TrimPrefix(s, "List")
return s
}