Go program that uses the api.ai service

apiai.go

package main

import (
        "encoding/json"
        "fmt"
        "log"
        "net/http"
        "time"
)

type QResponse struct {
        ID string `json:"id"`
        Timestamp time.Time `json:"timestamp"`
        Result struct {
                Source string `json:"source"`
                ResolvedQuery string `json:"resolvedQuery"`
                Action string `json:"action"`
                ActionIncomplete bool `json:"actionIncomplete"`
                Parameters struct {
                        Name string `json:"name"`
                } `json:"parameters"`
                Contexts []struct {
                        Name string `json:"name"`
                        Parameters struct {
                                Name string `json:"name"`
                        } `json:"parameters"`
                        Lifespan int `json:"lifespan"`
                } `json:"contexts"`
                Metadata struct {
                        IntentID string `json:"intentId"`
                        IntentName string `json:"intentName"`
                } `json:"metadata"`
                Fulfillment struct {
                        Speech string `json:"speech"`
                } `json:"fulfillment"`
        } `json:"result"`
        Status struct {
                Code int `json:"code"`
                ErrorType string `json:"errorType"`
        } `json:"status"`
}

func main() {
        url := fmt.Sprintf("https://api.api.ai/v1/query?v=20150910&query=weather&lang=en&latitude=35.925&longitude=-86.8688889&sessionId=1234567890")

        // Build the request
        req, err := http.NewRequest("GET", url, nil)
        if err != nil {
                log.Fatal("NewRequest: ", err)
                return
        }        
        // Replace 9ea93023b7274cfbb392b289658cff0b by your Client access token
        req.Header.Add("Authorization", "Bearer 9ea93023b7274cfbb392b289658cff0b")

        // For control over HTTP client headers,
        // redirect policy, and other settings,
        // create a Client
        // A Client is an HTTP client
        client := &http.Client{}

        // Send the request via a client
        // Do sends an HTTP request and
        // returns an HTTP response
        resp, err := client.Do(req)
        if err != nil {
                log.Fatal("Do: ", err)
                return
        }
        
        // Callers should close resp.Body
        // when done reading from it
        // Defer the closing of the body
        defer resp.Body.Close()       
        
        // Fill the record with the data from the JSON
        var record QResponse   
        
        // Use json.Decode for reading streams of JSON data
        if err := json.NewDecoder(resp.Body).Decode(&record); err != nil {
                log.Println(err)
        }

        fmt.Println("Status = ", record.Status.Code)
        fmt.Println("Response = ", record.Result.Fulfillment.Speech)
}