package main

import (
	"fmt"

	"google.golang.org/protobuf/compiler/protogen"
)

func (g *Generator) microGenerate(component string, plugin *protogen.Plugin, genClient bool, genServer bool) error {
	for _, file := range plugin.Files {
		if !file.Generate {
			continue
		}
		if len(file.Services) == 0 {
			continue
		}

		gname := file.GeneratedFilenamePrefix + "_" + component + ".pb.go"

		path := file.GoImportPath
		if g.standalone {
			path = "."
		}
		gfile := plugin.NewGeneratedFile(gname, path)

		gfile.P("// Code generated by protoc-gen-go-micro. DO NOT EDIT.")
		gfile.P("// versions:")
		gfile.P("// - protoc-gen-go-micro " + versionComment)
		gfile.P("// - protoc              ", protocVersion(plugin))
		gfile.P("// source: ", file.Desc.Path())
		gfile.P()
		gfile.P("package ", file.GoPackageName)
		gfile.P()

		gfile.Import(contextPackage)
		gfile.Import(microApiPackage)
		if genClient {
			gfile.Import(microClientPackage)
		}
		// generate services
		for _, service := range file.Services {
			g.generateServiceEndpoints(gfile, service)
			if genClient {
				g.generateServiceClientInterface(gfile, service)
				g.generateServiceClientStreamInterface(gfile, service)
			}
			if genServer {
				g.generateServiceServerInterface(gfile, service)
				g.generateServiceServerStreamInterface(gfile, service)
			}
		}

	}

	return nil
}

func protocVersion(plugin *protogen.Plugin) string {
	v := plugin.Request.GetCompilerVersion()
	if v == nil {
		return "(unknown)"
	}
	var suffix string
	if s := v.GetSuffix(); s != "" {
		suffix = "-" + s
	}
	return fmt.Sprintf("v%d.%d.%d%s", v.GetMajor(), v.GetMinor(), v.GetPatch(), suffix)
}