Okhrimenko - Homework2 with fixes

homeworks/Taras.Okhrimenko-OkhTar/Homework1/main.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"fmt"
+	"math"
+	"sort"
+)
+
+// Figures interface for volume
+type Figures interface {
+	volume() float64
+}
+
+// Sphere struct create
+type Sphere struct {
+	radius float64
+}
+
+func (s *Sphere) volume() float64 {
+	return (4.0 * math.Pi * math.Pow(s.radius, 3)) / 3
+}
+
+// Сone struct create
+type Сone struct {
+	radius, height float64
+}
+
+func (c *Сone) volume() float64 {
+	return (math.Pi * math.Pow(c.radius, 2) * c.height) / 3
+}
+
+// Parallelepiped struct create
+type Parallelepiped struct {
+	a, b, height float64
+}
+
+func (p *Parallelepiped) volume() float64 {
+	return p.a * p.b * p.height
+}
+
+// ArrFig type create
+type ArrFig []Figures
+
+func (a ArrFig) Len() int           { return len(a) }
+func (a ArrFig) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a ArrFig) Less(i, j int) bool { return a[i].volume() < a[j].volume() }
+
+// OutRes output array with figure volume
+func OutRes(arr ArrFig) {
+	for _, el := range arr {
+		fmt.Printf("%.4v \t||| %v (%T)\n", el.volume(), el, el)
+	}
+	fmt.Printf("\n")
+}
+
+func main() {
+	sph1 := &Sphere{9.3}
+	sph2 := &Sphere{3.4}
+	cone1 := &Сone{7.3, 2.2}
+	cone2 := &Сone{3, 8.1}
+	paral1 := &Parallelepiped{5, 3.1, 3.3}
+	paral2 := &Parallelepiped{3.9, 3.7, 4}
+	paral3 := &Parallelepiped{0.4, 6.4, 5}
+
+	arr := make(ArrFig, 0, 7)
+
+	arr = append(arr, sph1, sph2, cone1, cone2, paral1, paral2, paral3)
+
+	fmt.Println("Input data (before sort):")
+	OutRes(arr)
+
+	sort.Sort(arr)
+
+	fmt.Println("Sorted figure volume values:")
+	OutRes(arr)
+}

homeworks/Taras.Okhrimenko-OkhTar/Homework1/task.txt

@@ -0,0 +1,3 @@
+1.  Описать обємні фігури: куля, конус, паралелепіпед використовуючи структури
+2.  реалізувать список/контейнер для фігур (додавать можна різні фігури). 
+    він повинен сортувати свій вміст за обємом (для реалізації використовать інтерфейси)

homeworks/Taras.Okhrimenko-OkhTar/Homework2/jsonurl.go

@@ -0,0 +1,91 @@
+// OLD version
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"reflect"
+	"time"
+)
+
+// NameReader -
+// source can be local file or url of JSON file
+// read this file, parse and return "key" field value
+type NameReader interface {
+	Read(source string, key string) []string
+}
+
+type User struct {
+	ID      int     `json:"id"`
+	Name    string  `json:"username"`
+	Email   string  `json:"email"`
+	Addr    Addr    `json:"address"`
+	Phone   string  `json:"phone"`
+	WebSite string  `json:"website"`
+	Company Company `json:"company"`
+}
+
+type Addr struct {
+	Street  string            `json:"street"`
+	Suite   string            `json:"suite"`
+	City    string            `json:"city"`
+	Zipcode string            `json:"zipcode"`
+	Geo     map[string]string `json:"geo"`
+}
+
+type Company struct {
+	Name        string `json:"name"`
+	CatchPhrase string `json:"catchPhrase"`
+	Bs          string `json:"bs"`
+}
+
+var myClient = &http.Client{Timeout: 10 * time.Second}
+
+func Read(source string, key string) []string {
+	r, err := myClient.Get(source)
+	if err != nil {
+		panic(err)
+	}
+	defer r.Body.Close()
+
+	var usersList []User
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(r.Body)
+	respByte := buf.Bytes()
+	if err := json.Unmarshal(respByte, &usersList); err != nil {
+		panic(err)
+	}
+
+	var valArr = make([]string, 0, len(usersList))
+
+	for _, user := range usersList {
+		e := reflect.ValueOf(&user).Elem()
+
+		var resArr = make([]string, 0, e.NumField())
+
+		for i := 0; i < e.NumField(); i++ {
+			varName := e.Type().Field(i).Name
+			resArr = append(resArr, varName)
+		}
+
+		for i, v := range resArr {
+			if key == v {
+				varValue := e.Field(i).Interface()
+				valArr = append(valArr, fmt.Sprintf("%v", varValue))
+			}
+		}
+
+	}
+
+	return valArr
+}
+
+func main() {
+	url := "https://jsonplaceholder.typicode.com/users"
+	res := Read(url, "Name")
+
+	fmt.Println(res)
+}

homeworks/Taras.Okhrimenko-OkhTar/Homework2/main.go

@@ -0,0 +1,91 @@
+// NEW version
+
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+)
+
+// NameReader -
+// source can be local file or url of JSON file
+// read this file, parse and return "key" field value
+type NameReader interface {
+	Read(source string, key string) (string, error)
+}
+
+type User struct {
+	ID       int    `json:"id"`
+	Name     string `json:"name"`
+	Username string `json:"username"`
+	Email    string `json:"email"`
+	Address  struct {
+		Street  string `json:"street"`
+		Suite   string `json:"suite"`
+		City    string `json:"city"`
+		Zipcode string `json:"zipcode"`
+		Geo     struct {
+			Lat string `json:"lat"`
+			Lng string `json:"lng"`
+		} `json:"geo"`
+	} `json:"address"`
+	Phone   string `json:"phone"`
+	Website string `json:"website"`
+	Company struct {
+		Name        string `json:"name"`
+		CatchPhrase string `json:"catchPhrase"`
+		Bs          string `json:"bs"`
+	} `json:"company"`
+}
+
+// getJSONFromURLByte func for getting json from url
+func getJSONFromURLByte(url string) ([]byte, error) {
+	var myClient = &http.Client{Timeout: 10 * time.Second}
+
+	r, err := myClient.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer r.Body.Close()
+
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(r.Body)
+	respByte := buf.Bytes()
+
+	return respByte, nil
+}
+
+func (u *User) Read(source string, key string) (string, error) {
+	var v map[string]interface{}
+
+	if err := json.Unmarshal([]byte(source), &v); err != nil {
+		return "", err
+	}
+
+	if val, ok := v[key]; ok {
+		return fmt.Sprintf("%v", val), nil
+	}
+	return "No key", nil
+}
+
+func main() {
+	url := "https://jsonplaceholder.typicode.com/users/3"
+
+	jsonStream, err := getJSONFromURLByte(url)
+	if err != nil {
+		log.Println(err)
+	}
+	fmt.Printf("Json:\n %v\n", string(jsonStream))
+
+	var usr User
+	res, err := usr.Read(string(jsonStream), "name")
+	if err != nil {
+		log.Println(err)
+	}
+	fmt.Println(res)
+
+}

homeworks/Taras.Okhrimenko-OkhTar/simpleAPI/go.mod

@@ -0,0 +1,17 @@
+module simpleAPI
+
+go 1.13
+
+require (
+	github.com/gin-gonic/gin v1.5.0
+	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/google/uuid v1.1.1
+	github.com/json-iterator/go v1.1.8 // indirect
+	github.com/leodido/go-urn v1.2.0 // indirect
+	github.com/mattn/go-isatty v0.0.11 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	golang.org/x/sys v0.0.0-20191210023423-ac6580df4449 // indirect
+	gopkg.in/go-playground/validator.v9 v9.30.2 // indirect
+	gopkg.in/yaml.v2 v2.2.7 // indirect
+)

homeworks/Taras.Okhrimenko-OkhTar/simpleAPI/go.sum

@@ -0,0 +1,64 @@
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homeworks/Taras.Okhrimenko-OkhTar/simpleAPI/httpd/handler/allorders_get.go

@@ -0,0 +1,15 @@
+package handler
+
+import (
+	"net/http"
+	"simpleAPI/platform/order"
+
+	"github.com/gin-gonic/gin"
+)
+
+func AllOrdersGet(order *order.AllOrders) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		res := order.GetAll()
+		c.JSON(http.StatusOK, res)
+	}
+}

homeworks/Taras.Okhrimenko-OkhTar/simpleAPI/httpd/handler/allorders_post.go

@@ -0,0 +1,34 @@
+package handler
+
+import (
+	"net/http"
+	"simpleAPI/platform/order"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+type allOrdersPostRequest struct {
+	ID       string `json:"id"`
+	Products []int  `json:"products"`
+}
+
+func AllOrdersPost(o *order.AllOrders) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		reqBody := allOrdersPostRequest{}
+		c.Bind(&reqBody)
+
+		item := order.Order{
+			ID:       uuid.New().String(),
+			Products: reqBody.Products,
+		}
+
+		if (item.ID != "") || (item.Products != nil) {
+			o.Add(item)
+		}
+
+		c.JSON(http.StatusOK, item.ID)
+
+		c.Status(http.StatusNoContent)
+	}
+}