feature: init order features

.air.toml

@@ -0,0 +1,46 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+  args_bin = []
+  bin = "./tmp/main"
+  cmd = "go build -o ./tmp/main ./cmd/rest/main.go"
+  delay = 1000
+  exclude_dir = ["assets", "tmp", "vendor", "testdata"]
+  exclude_file = []
+  exclude_regex = ["_test.go"]
+  exclude_unchanged = false
+  follow_symlink = false
+  full_bin = ""
+  include_dir = []
+  include_ext = ["go", "tpl", "tmpl", "html"]
+  include_file = []
+  kill_delay = "0s"
+  log = "build-errors.log"
+  poll = false
+  poll_interval = 0
+  post_cmd = []
+  pre_cmd = []
+  rerun = false
+  rerun_delay = 500
+  send_interrupt = false
+  stop_on_error = false
+
+[color]
+  app = ""
+  build = "yellow"
+  main = "magenta"
+  runner = "green"
+  watcher = "cyan"
+
+[log]
+  main_only = false
+  time = false
+
+[misc]
+  clean_on_exit = false
+
+[screen]
+  clear_on_rebuild = false
+  keep_scroll = true

.gitignore

@@ -0,0 +1,2 @@
+.idea/*
+tmp/*

Makefile

@@ -0,0 +1,2 @@
+dev:
+	air

cmd/rest/main.go

@@ -1 +1,26 @@
-package rest
+package main
+
+import (
+	db2 "github.com/pangolin-do-golang/tech-challenge/internal/adapters/db"
+	"github.com/pangolin-do-golang/tech-challenge/internal/adapters/rest/server"
+	"github.com/pangolin-do-golang/tech-challenge/internal/application/order"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	"log"
+)
+
+func main() {
+	dsn := "host=localhost user=user password=pass dbname=postgres port=5432 sslmode=disable TimeZone=America/Sao_Paulo"
+	db, err := gorm.Open(postgres.Open(dsn), &gorm.Config{})
+
+	if err != nil {
+		log.Panic(err)
+	}
+
+	orderRepository := db2.NewPostgresOrderRepository(db)
+	orderService := order.NewOrderService(orderRepository)
+
+	restServer := server.NewRestServer(orderService)
+
+	restServer.Serve()
+}

database/migrations/2024-04-18-20-56_init-db.sql

@@ -0,0 +1,9 @@
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+CREATE TABlE "order"
+(
+    id           UUID primary key not null default uuid_generate_v4(),
+    total_amount decimal          not null,
+    createdAt    timestamptz      not null default now(),
+    status       varchar(50)      not null
+);

docker-compose.yaml

@@ -0,0 +1,10 @@
+version: '3.9'
+
+services:
+  pgsql:
+    image: postgres:16.2
+    ports:
+      - "5432:5432"
+    environment:
+      - POSTGRES_USER=user
+      - POSTGRES_PASSWORD=pass

go.mod

@@ -1,3 +1,43 @@
 module github.com/pangolin-do-golang/tech-challenge
 
 go 1.20
+
+require (
+	github.com/bytedance/sonic v1.11.5 // indirect
+	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/cloudwego/base64x v0.1.3 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.9.1 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.19.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20231201235250-de7065d80cb9 // indirect
+	github.com/jackc/pgx/v5 v5.5.5 // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	golang.org/x/arch v0.7.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	gorm.io/driver/postgres v1.5.7 // indirect
+	gorm.io/gorm v1.25.9 // indirect
+)

go.sum

@@ -0,0 +1,108 @@
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+gorm.io/driver/postgres v1.5.7 h1:8ptbNJTDbEmhdr62uReG5BGkdQyeasu/FZHxI0IMGnM=
+gorm.io/driver/postgres v1.5.7/go.mod h1:3e019WlBaYI5o5LIdNV+LyxCMNtLOQETBXL2h4chKpA=
+gorm.io/gorm v1.25.9 h1:wct0gxZIELDk8+ZqF/MVnHLkA1rvYlBWUMv2EdsK1g8=
+gorm.io/gorm v1.25.9/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

internal/adapters/db/order.go

@@ -0,0 +1,44 @@
+package db
+
+import (
+	"fmt"
+	"github.com/pangolin-do-golang/tech-challenge/internal/application/order"
+	"gorm.io/gorm"
+	"time"
+)
+
+type PostgresOrderRepository struct {
+	db *gorm.DB
+}
+
+type OrderPostgres struct {
+	Id          string    `gorm:"id"`
+	CreatedAt   time.Time `gorm:"created_at"`
+	TotalAmount float64   `gorm:"total_amount"`
+	Status      string    `gorm:"status"`
+}
+
+func (op OrderPostgres) TableName() string {
+	return "order"
+}
+
+func NewPostgresOrderRepository(db *gorm.DB) order.Repository {
+	return &PostgresOrderRepository{db: db}
+}
+
+func (repo *PostgresOrderRepository) Get(id string) (*order.Order, error) {
+	var dbOrder OrderPostgres
+
+	if err := repo.db.First(&dbOrder, "id = ?", id).Error; err != nil {
+
+		fmt.Println("Order not found:", err)
+		return nil, err
+	}
+
+	return &order.Order{
+		Id:          dbOrder.Id,
+		CreatedAt:   dbOrder.CreatedAt,
+		TotalAmount: dbOrder.TotalAmount,
+		Status:      dbOrder.Status,
+	}, nil
+}

internal/adapters/rest/handler/order.go

@@ -1 +1,26 @@
 package handler
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/pangolin-do-golang/tech-challenge/internal/application/order"
+	"net/http"
+)
+
+func RegisterOrderHandlers(router *gin.Engine, service *order.Service) {
+
+	router.GET("/order/:id", func(c *gin.Context) {
+		id := c.Param("id")
+
+		order, err := service.Get(id)
+
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{
+				"error": "something went bad :(",
+			})
+
+			return
+		}
+
+		c.JSON(http.StatusOK, order)
+	})
+}

internal/adapters/rest/server/server.go

@@ -1 +1,31 @@
 package server
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/pangolin-do-golang/tech-challenge/internal/adapters/rest/handler"
+	"github.com/pangolin-do-golang/tech-challenge/internal/application/order"
+	"net/http"
+)
+
+type RestServer struct {
+	orderService *order.Service
+}
+
+func NewRestServer(orderService *order.Service) *RestServer {
+	return &RestServer{
+		orderService: orderService,
+	}
+}
+
+func (rs RestServer) Serve() {
+	r := gin.Default()
+	r.GET("/status", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{
+			"status": "ok",
+		})
+	})
+
+	handler.RegisterOrderHandlers(r, rs.orderService)
+
+	r.Run()
+}

internal/application/order/order.go

@@ -1 +1,14 @@
 package order
+
+import "time"
+
+type Order struct {
+	Id          string
+	CreatedAt   time.Time
+	TotalAmount float64
+	Status      string
+}
+
+type Repository interface {
+	Get(id string) (*Order, error)
+}