Add graphql go consumption example

Signed-off-by: Quoc Trung Hoang <hoangquo@etu.utc.fr>

graphql/examples/pokemon.go

@@ -0,0 +1,107 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+type Operation struct {
+	Query         string                 `json:"query"`
+	Variables     map[string]interface{} `json:"variables"`
+	OperationName string                 `json:"operationName"`
+}
+
+var (
+	pokemonDetails = Operation{
+		OperationName: "pokemon_details",
+		Variables:     map[string]interface{}{},
+		Query: `
+query pokemon_details {
+	species: pokemon_v2_pokemonspecies(where: {name: {_eq: "staryu"}}) {
+	name
+	base_happiness
+	is_legendary
+	is_mythical
+	generation: pokemon_v2_generation {
+		name
+	}
+	habitat: pokemon_v2_pokemonhabitat {
+		name
+	}
+	pokemon: pokemon_v2_pokemons_aggregate(limit: 1) {
+		nodes {
+		height
+		name
+		id
+		weight
+		abilities: pokemon_v2_pokemonabilities_aggregate {
+			nodes {
+			ability: pokemon_v2_ability {
+				name
+			}
+			}
+		}
+		stats: pokemon_v2_pokemonstats {
+			base_stat
+			stat: pokemon_v2_stat {
+			name
+			}
+		}
+		types: pokemon_v2_pokemontypes {
+			slot
+			type: pokemon_v2_type {
+			name
+			}
+		}
+		levelUpMoves: pokemon_v2_pokemonmoves_aggregate(where: {pokemon_v2_movelearnmethod: {name: {_eq: "level-up"}}}, distinct_on: move_id) {
+			nodes {
+			move: pokemon_v2_move {
+				name
+			}
+			level
+			}
+		}
+		foundInAsManyPlaces: pokemon_v2_encounters_aggregate {
+			aggregate {
+			count
+			}
+		}
+		fireRedItems: pokemon_v2_pokemonitems(where: {pokemon_v2_version: {name: {_eq: "firered"}}}) {
+			pokemon_v2_item {
+			name
+			cost
+			}
+			rarity
+		}
+		}
+	}
+	flavorText: pokemon_v2_pokemonspeciesflavortexts(where: {pokemon_v2_language: {name: {_eq: "en"}}, pokemon_v2_version: {name: {_eq: "firered"}}}) {
+		flavor_text
+	}
+	}
+}
+	  `,
+	}
+)
+
+func main() {
+	url := "https://beta.pokeapi.co/graphql/v1beta"
+	body, err := json.Marshal(pokemonDetails)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	resp, err := http.Post(url, "", bytes.NewReader(body))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+	body, err = ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	log.Println(string(body))
+}