correction yaml creation - extraction yaml + html preparation

internal/renderer/fetchingyaml.go

@@ -0,0 +1,63 @@
+package renderer
+import (
+	"log"
+	"project.hechon.fr/internal/config"
+	"project.hechon.fr/internal/models"
+	"gopkg.in/yaml.v3"
+	"os"
+	"path"
+	"strconv"
+	"fmt"
+)
+
+func ExtractChapter(cfg *config.Cfg, chapterNum int) (error){
+	
+	fileName := path.Join(cfg.YamlPath, cfg.Book.Name + strconv.Itoa(chapterNum) + ".yaml")
+	file, err := os.Open(fileName)
+	if err != nil {
+		log.Printf("can’t open %v: %v", fileName, err)
+		 return err
+	}
+
+	var yamlData models.Yaml 
+	if err = yaml.NewDecoder(file).Decode(&yamlData) ; err != nil{
+		return err
+	}
+
+	log.Printf("%v", yamlData)
+
+	if len(yamlData.PoeticLines) == 0 || len(yamlData.PoeticLines[0].Cola) == 0 {
+		return fmt.Errorf("no data in %v", fileName) 
+	}
+
+	var psalm models.Psalm
+	currentStrophe := models.Strophe{
+			Who: yamlData.PoeticLines[0].Who,
+			To: yamlData.PoeticLines[0].To,
+			Of: yamlData.PoeticLines[0].Of,
+		}
+
+	for _, poeticLine := range yamlData.PoeticLines{
+		log.Printf("first line: %v - %v - %v", poeticLine.Who, poeticLine.To, poeticLine.Of)
+	
+		if poeticLine.Who  == currentStrophe.Who && 
+	   	   poeticLine.To == currentStrophe.To &&
+	   	   poeticLine.Of == currentStrophe.Of {
+		   	currentStrophe.Colas = append(currentStrophe.Colas, poeticLine.Cola)
+		}else{
+			psalm.Strophes = append(psalm.Strophes, currentStrophe)
+			currentStrophe.Who = poeticLine.Who
+			currentStrophe.Of = poeticLine.Of
+			currentStrophe.To = poeticLine.To
+		}
+
+	}
+
+	psalm.Strophes = append(psalm.Strophes, currentStrophe)
+	
+	log.Printf("%v", psalm)
+	return nil
+
+
+
+}