feat (generate-file): not tested yet

pkg/file-helper/file-helper.go

@@ -0,0 +1,33 @@
+package filehelper
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// const DEFAULT_EXPIRY_FILES = time.Hour * 24 * 7
+
+func PathAgreement(medicalNumber string) (string, error) {
+	outputPath := fmt.Sprintf("./public/patient/%s", medicalNumber)
+	err := os.MkdirAll(outputPath, os.ModePerm)
+	return outputPath, err
+}
+
+func PathToSaveFile(outputPath string) (string, error) {
+	err := os.MkdirAll(outputPath, os.ModePerm)
+	return outputPath, err
+}
+
+func RenameFile(srcPath, dstPath string) error {
+	return os.Rename(srcPath, dstPath)
+}
+
+func DeleteFolder(path string) error {
+	return os.RemoveAll(path)
+}
+
+func PathToUrl(fileName string) *string {
+	fileUrl := filepath.ToSlash(fmt.Sprintf("%c%s", os.PathSeparator, fileName))
+	return &fileUrl
+}

pkg/pdf-helper/pdf-helper.go

@@ -0,0 +1,131 @@
+package pdfhelper
+
+import (
+	"bytes"
+	"html/template"
+	"log"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/SebastiaanKlippert/go-wkhtmltopdf"
+)
+
+// pdf requestpdf struct
+type RequestPdf struct {
+	body string
+}
+
+// new request to pdf function
+func NewRequestPdf(body string) *RequestPdf {
+	return &RequestPdf{
+		body: body,
+	}
+}
+
+// parsing template function
+func (r *RequestPdf) ParseTemplate(templatePath string, data interface{}) error {
+	f := strings.Split(templatePath, "/")
+	fileName := f[len(f)-1]
+	funcs := template.FuncMap{
+		"nl2br": func(text string) template.HTML {
+			return template.HTML(strings.Replace(template.HTMLEscapeString(text), "\n", "<br>", -1))
+		},
+	}
+	t, err := template.New(fileName).Funcs(funcs).ParseFiles(templatePath)
+	if err != nil {
+		return err
+	}
+	buf := new(bytes.Buffer)
+	if err = t.Execute(buf, data); err != nil {
+		return err
+	}
+	r.body = buf.String()
+
+	return nil
+}
+
+func (r *RequestPdf) GenerateByCommand(pdfPath string, templatePath string) (bool, error) {
+	// wkhtmltopdf -L 0 -R 0 -B 0 -s Legal  --enable-local-file-access resultAntigen2.html out.pdf
+	t := time.Now().Unix()
+
+	if _, err := os.Stat("cloneTemplate/"); os.IsNotExist(err) {
+		errDir := os.Mkdir("cloneTemplate/", 0777)
+		if errDir != nil {
+			log.Fatal(errDir)
+		}
+	}
+	htmlName := strconv.FormatInt(int64(t), 10) + ".html"
+	err := os.WriteFile("cloneTemplate/"+htmlName, []byte(r.body), 0644)
+	if err != nil {
+		panic(err)
+	}
+
+	cmd := exec.Command("wkhtmltopdf", "--enable-local-file-access", "-L", "0", "-R", "0", "-B", "0", "-s", "A4", "cloneTemplate/"+htmlName, pdfPath)
+
+	if err := cmd.Run(); err != nil {
+		return false, err
+	}
+	dir, err := os.Getwd()
+	if err != nil {
+		panic(err)
+	}
+	defer os.RemoveAll(dir + "/cloneTemplate")
+	return true, nil
+}
+
+// generate pdf function
+func (r *RequestPdf) GeneratePDF(pdfPath string) (bool, error) {
+	t := time.Now().Unix()
+
+	if _, err := os.Stat("cloneTemplate/"); os.IsNotExist(err) {
+		errDir := os.Mkdir("cloneTemplate/", 0777)
+		if errDir != nil {
+			log.Fatal(errDir)
+		}
+	}
+	err1 := os.WriteFile("cloneTemplate/"+strconv.FormatInt(int64(t), 10)+".html", []byte(r.body), 0644)
+	if err1 != nil {
+		panic(err1)
+	}
+
+	f, err := os.Open("cloneTemplate/" + strconv.FormatInt(int64(t), 10) + ".html")
+	if f != nil {
+		defer f.Close()
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	pdfg, err := wkhtmltopdf.NewPDFGenerator()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	pdfg.AddPage(wkhtmltopdf.NewPageReader(f))
+
+	pdfg.PageSize.Set(wkhtmltopdf.PageSizeA4)
+
+	pdfg.Dpi.Set(300)
+
+	err = pdfg.Create()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = pdfg.WriteFile(pdfPath)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	dir, err := os.Getwd()
+	if err != nil {
+		panic(err)
+	}
+
+	defer os.RemoveAll(dir + "/cloneTemplate")
+
+	return true, nil
+}