expand coding task example

cmd/survey/tasks/codingTask.go

@@ -2,6 +2,9 @@ package tasks
 
 import (
 	"context"
+	"fmt"
+	"os"
+	"strings"
 
 	"github.com/LazyBachelor/LazyPM/internal/service"
 	"github.com/LazyBachelor/LazyPM/pkg/task"
@@ -13,6 +16,11 @@ const codingDescription = `You are tasked with writing a simple function.
 Write a function that takes two integers and returns their sum.
 The function should be named "Add" and be part of the "coding" package.`
 
+var textFileContent = codingDescription + `
+Please write your code below this line!
+############################################################
+`
+
 type CodingTask struct {
 	svc *service.Services
 }
@@ -41,9 +49,48 @@ func (t *CodingTask) Questions(interfaceType task.InterfaceType) (questions task
 }
 
 func (t *CodingTask) Setup(ctx context.Context) error {
+	if err := t.svc.DeleteIssues(); err != nil {
+		return err
+	}
+
+	content := textFileContent
+	
+	if err := os.WriteFile("./code.txt", []byte(content), 0644); err != nil {
+		return err
+	}
+
 	return nil
 }
 
 func (t *CodingTask) Validate(ctx context.Context) (bool, error) {
+
+	file, err := os.ReadFile("./code.txt")
+	if err != nil {
+		return false, err
+	}
+
+	if string(file) == "" {
+		return false, fmt.Errorf("the file is empty")
+	}
+
+	code, ok := strings.CutPrefix(string(file), textFileContent)
+	if !ok {
+		return false, fmt.Errorf("the file content is not in the expected format")
+	}
+
+	code = strings.TrimSpace(code)
+
+	if !strings.Contains(code, "package coding") {
+		return false, fmt.Errorf("the code does not belong to the 'coding' package")
+	}
+
+	if !strings.Contains(code, "func Add") {
+		return false, fmt.Errorf("the function 'Add' is not defined")
+	}
+
+	if !strings.Contains(code, "return") {
+		return false, fmt.Errorf("the function does not contain a return statement")
+	}
+
 	return true, nil
 }