first commit

vyatsuAPI/main/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"github.com/labstack/echo/v4"
+	"github.com/swaggo/echo-swagger"
+	"net/http"
+	"strconv"
+	_ "vyatsuAPIInventory/docs"
+	"vyatsuAPIInventory/vyatsuAPI/models"
+	"vyatsuAPIInventory/vyatsuAPI/repository"
+)
+
+const connectionURL = "postgres://tgbot:pass@localhost:5432/vyatsu"
+
+// @title Vyatsu
+// @host localhost:8080
+// @version 1.0
+// @BasePath /
+func main() {
+	e := echo.New()
+	e.GET("/employees", getEmployees)
+	e.GET("/swagger/*", echoSwagger.WrapHandler)
+	// Start server
+	e.Logger.Fatal(e.Start(":8080"))
+}
+
+// @Summary Get List Of Employees
+// @Tags get
+// @Description get list
+// @Produce json
+// @Success 200
+func getEmployees(e echo.Context) error {
+	db, err := repository.New(connectionURL)
+	offset, err := strconv.Atoi(e.QueryParam("offset"))
+	limit, err := strconv.Atoi(e.QueryParam("limit"))
+	position := e.QueryParam("position")
+	var employees []models.Employee
+	if limit == 0 {
+		limit = 10
+	}
+	if position == "" {
+		employees, err = db.GetEmployees(offset, limit)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
+		}
+	} else {
+		employees, err = db.GetEmployeesWithFilterByPosition(offset, limit, position)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
+		}
+	}
+	return e.JSON(http.StatusOK, employees)
+
+}

vyatsuAPI/models/models.go

@@ -0,0 +1,9 @@
+package models
+
+type Employee struct {
+	ID              int
+	Name            string
+	Email           string
+	Position        string
+	PersonnelNumber int
+}

vyatsuAPI/repository/employees.go

@@ -0,0 +1,47 @@
+package repository
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"vyatsuAPIInventory/vyatsuAPI/models"
+)
+
+func (repo *PGrepo) GetEmployees(offset int, limit int) ([]models.Employee, error) {
+	rows, err := repo.pool.Query(context.Background(), "select * from employees LIMIT $1 OFFSET $2", limit, offset)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+	defer rows.Close()
+	var employees []models.Employee
+	for rows.Next() {
+		e := models.Employee{}
+		err := rows.Scan(&e.ID, &e.Name, &e.Email, &e.Position, &e.PersonnelNumber)
+		if err != nil {
+			fmt.Println(err)
+			continue
+		}
+		employees = append(employees, e)
+	}
+	return employees, nil
+}
+func (repo *PGrepo) GetEmployeesWithFilterByPosition(offset int, limit int, position string) ([]models.Employee, error) {
+	rows, err := repo.pool.Query(context.Background(), "select * from employees where position = $3 LIMIT $1 OFFSET $2", limit, offset, position)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+	defer rows.Close()
+	var employees []models.Employee
+	for rows.Next() {
+		e := models.Employee{}
+		err := rows.Scan(&e.ID, &e.Name, &e.Email, &e.Position, &e.PersonnelNumber)
+		if err != nil {
+			fmt.Println(err)
+			continue
+		}
+		employees = append(employees, e)
+	}
+	return employees, nil
+}

vyatsuAPI/repository/pgsql.go

@@ -0,0 +1,20 @@
+package repository
+
+import (
+	"context"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"sync"
+)
+
+type PGrepo struct {
+	mu   sync.Mutex
+	pool *pgxpool.Pool
+}
+
+func New(connStr string) (*PGrepo, error) {
+	pool, err := pgxpool.New(context.Background(), connStr)
+	if err != nil {
+		panic(err)
+	}
+	return &PGrepo{mu: sync.Mutex{}, pool: pool}, nil
+}