package got

import (
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"
	"strings"

	. "git.eugeniocarvalho.dev/eugeniucarvalho/apicodegen/common"
)

var (
	dependenceMethodDeclared = map[string]bool{}
)

func Translate(p *Project) (err error) {

	handlers := map[string]func(*Project) error {
		"CreateMainFile":CreateMainFile,
		"CreateMetricFiles":CreateMetricFiles,
		"createParamsFile":createParamsFile,
		"CreateEnvironment":CreateEnvironment,
		"CreateVariables":CreateVariables,
		"GenSchemas":GenSchemas,
		"GenResources":GenResources,
		"GenMiddlewares":GenMiddlewares,
	}

	for stage, fn := range handlers {
		if err = fn(p); err != nil {
			return fmt.Errorf("[%s] %s",stage,err.Error())
		}
	}
	return include(p)
}

func createSymbolicLinks(p *Project) func(string, os.FileInfo, error) error {
	var (
		basedir  = p.Paths.Include("/go")
		fileContent    []byte
	)

	return  func(sourcePath string, fileInfo os.FileInfo, errX error) (err error) {

		if errX != nil {
			fmt.Printf("error 「%v」 at a path 「%q」\n", errX, sourcePath)
			return errX
		}
		
		relativePath := strings.Replace(sourcePath, basedir, "", 1)
		
		if relativePath == "" {
			return
		}

		if fileInfo.IsDir() {
			os.MkdirAll(p.Paths.Build("/%s/%s", p.Package, relativePath), 0777)

		} else {

			if fileContent, err = ioutil.ReadFile(sourcePath); err != nil {
				return
			}

			if err = ioutil.WriteFile(
				p.Paths.Build("/%s/%s", p.Package, relativePath),
				fileContent,
				0777,
			); err != nil {
				return
			}
		}

		return nil
	}
	
}

func include(p *Project) error {
	var err error
	
	delete := fmt.Sprintf("find %s -type l -delete", p.Paths.Build(""))
	if err = exec.Command("sh", "-c", delete).Run(); err != nil {
		fmt.Println("include error ", err)
	}

	if err = filepath.Walk(p.Paths.Include("/go"), createSymbolicLinks(p)); err != nil {
		return err
	}
	return err
}