initial commit

.gitignore

@@ -0,0 +1,2 @@
+.idea/
+pokedex.db

go.mod

@@ -0,0 +1,11 @@
+module pokedex
+
+go 1.22
+
+require (
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/mattn/go-sqlite3 v1.14.22 // indirect
+	gorm.io/driver/sqlite v1.5.5 // indirect
+	gorm.io/gorm v1.25.9 // indirect
+)

go.sum

@@ -0,0 +1,10 @@
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+gorm.io/driver/sqlite v1.5.5 h1:7MDMtUZhV065SilG62E0MquljeArQZNfJnjd9i9gx3E=
+gorm.io/driver/sqlite v1.5.5/go.mod h1:6NgQ7sQWAIFsPrJJl1lSNSu2TABh0ZZ/zm5fosATavE=
+gorm.io/gorm v1.25.9 h1:wct0gxZIELDk8+ZqF/MVnHLkA1rvYlBWUMv2EdsK1g8=
+gorm.io/gorm v1.25.9/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=

main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"net/http"
+	"os"
+	"pokedex/pokemon"
+)
+
+func openNewDb() *gorm.DB {
+	os.Remove("pokedex.db")
+	db, err := gorm.Open(sqlite.Open("pokedex.db"), &gorm.Config{})
+	if err != nil {
+		panic("failed to connect database")
+	}
+	return db
+}
+
+func main() {
+	db := openNewDb()
+	pokemon.Seed(db)
+
+	routes(db)
+	http.ListenAndServe(":8080", nil)
+}

pokemon/handler.go

@@ -0,0 +1,35 @@
+package pokemon
+
+import (
+	"fmt"
+	"gorm.io/gorm"
+	"net/http"
+	"pokedex/rest"
+)
+
+func HandleFindSingle(db *gorm.DB, rw http.ResponseWriter, req *http.Request) {
+	repo := NewRepo(db)
+	name := req.PathValue("name")
+	fmt.Println("Path " + name)
+
+	pk, err := repo.Find(name)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	rest.Json(rw, []Pokemon{
+		pk,
+	})
+}
+
+func HandleFindAll(db *gorm.DB, rw http.ResponseWriter, req *http.Request) {
+	repo := NewRepo(db)
+	pokemons, err := repo.FindAll()
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	rest.Json(rw, pokemons)
+}

pokemon/pokemon.go

@@ -0,0 +1,15 @@
+package pokemon
+
+type Move struct {
+	Name      string
+	Url       string
+	PokemonID uint // implicit; see https://gorm.io/docs/has_many.html
+}
+
+type Pokemon struct {
+	Id     int
+	Name   string
+	Height int
+	Weight int
+	Moves  []Move
+}

pokemon/repo.go

@@ -0,0 +1,36 @@
+package pokemon
+
+import (
+	"fmt"
+	"gorm.io/gorm"
+)
+
+type Repo struct {
+	db *gorm.DB
+}
+
+func NewRepo(db *gorm.DB) Repo {
+	return Repo{
+		db: db,
+	}
+}
+
+func (r Repo) Find(name string) (Pokemon, error) {
+	var pokemon Pokemon
+	result := r.db.Find(&pokemon, "name = ?", name) // .First() generates an error if none found
+	if result.Error != nil {
+		return Pokemon{}, fmt.Errorf("Unable to retrive pokemon named %s: %w", name, result.Error)
+	}
+
+	return pokemon, nil
+}
+
+func (r Repo) FindAll() ([]Pokemon, error) {
+	var pokemons []Pokemon
+	result := r.db.Model(&Pokemon{}).Preload("Moves").Find(&pokemons)
+	if result.Error != nil {
+		return nil, fmt.Errorf("Unable to retrive pokemons: %w", result.Error)
+	}
+
+	return pokemons, nil
+}

pokemon/seeder.go

@@ -0,0 +1,34 @@
+package pokemon
+
+import "gorm.io/gorm"
+
+func Seed(db *gorm.DB) {
+	pokemons := []Pokemon{
+		{
+			Id:     0,
+			Name:   "Jaak",
+			Height: 0,
+			Weight: 0,
+			Moves: []Move{
+				{
+					Name: "Boojakasja",
+					Url:  "http://sjakka.be",
+				},
+				{
+					Name: "Uppercut",
+					Url:  "https://vlampatat.co",
+				},
+			},
+		},
+	}
+
+	db.AutoMigrate(&Pokemon{})
+	db.AutoMigrate(&Move{})
+
+	for _, pokemon := range pokemons {
+		res := db.Create(&pokemon)
+		if res.Error != nil {
+			panic(res.Error)
+		}
+	}
+}

rest/restutils.go

@@ -0,0 +1,29 @@
+package rest
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func Json(w http.ResponseWriter, data any) {
+	bytes, err := json.MarshalIndent(data, "", "  ")
+	if err != nil {
+		http.Error(w, "Oops, something went wrong", http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+	w.Write(bytes)
+}
+
+func BadRequest(w http.ResponseWriter) {
+	http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
+}
+
+func TooManyRequests(w http.ResponseWriter) {
+	http.Error(w, http.StatusText(http.StatusTooManyRequests), http.StatusTooManyRequests)
+}
+
+func Unauthorized(w http.ResponseWriter) {
+	http.Error(w, http.StatusText(http.StatusUnauthorized), http.StatusUnauthorized)
+}

server.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"gorm.io/gorm"
+	"net/http"
+	"pokedex/pokemon"
+	"pokedex/rest"
+)
+
+func magda(db *gorm.DB, fn func(db *gorm.DB, w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		auth := r.Header.Get("authorization")
+		if auth != "Jefklak is cool" {
+			rest.Unauthorized(w)
+			return
+		}
+
+		fn(db, w, r)
+	}
+}
+
+func routes(db *gorm.DB) {
+	http.HandleFunc("GET /pokemon/", magda(db, pokemon.HandleFindAll))
+	http.HandleFunc("GET /pokemon/{name}", magda(db, pokemon.HandleFindSingle))
+}