driver: implement trips from the new API

Updates #49

Implements method
- DriverTrips which
  correlates with https://developer.uber.com/docs/drivers/references/api/v1/partners-trips-get
and allows one to query for driver trips within a period or paginate
within them.

* Also refactored to reuse DriverPayments which only varies from
DriverTrips by populating Payments instead of Trips; the rest
of the pagination and usage is the same

Sample usage
```go
package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"github.com/orijtech/uber/v1"
)

func main() {
	client, err := uber.NewClientFromOAuth2File(os.ExpandEnv("$HOME/.uber/credentials.json"))
	if err != nil {
		log.Fatal(err)
	}
	aWeekAgo := time.Now().Add(-1 * time.Hour * 7 * 24)
	yesterday := time.Now().Add(-1 * time.Hour * 24)
	trips, err := client.ListDriverTrips(&uber.DriverInfoQuery{
		StartDate:     &aWeekAgo,
		EndDate:       &yesterday,
		MaxPageNumber: 2,
		Offset:        4,
	})
	if err != nil {
		log.Fatal(err)
	}
	for page := range trips.Pages {
		if page.Err != nil {
			fmt.Printf("%d err: %v\n", page.PageNumber, page.Err)
			continue
		}
		for i, trip := range page.Trips {
			fmt.Printf("\t%d:: DriverID: %q\nFare: %.2f\n%#v\n", i, trip.DriverID, trip.Fare, trip)
		}
		fmt.Println()
	}
}
```

example_test.go

@@ -518,7 +518,7 @@ func Example_client_ListDriverPayments() {
 	}
 	aWeekAgo := time.Now().Add(-1 * time.Hour * 7 * 24)
 	yesterday := time.Now().Add(-1 * time.Hour * 24)
-	payments, err := client.ListDriverPayments(&uber.DriverPaymentsQuery{
+	payments, err := client.ListDriverPayments(&uber.DriverInfoQuery{
 		StartDate: &aWeekAgo,
 		EndDate:   &yesterday,
 	})
@@ -536,3 +536,31 @@ func Example_client_ListDriverPayments() {
 		fmt.Println()
 	}
 }
+
+func Example_client_ListDriverTrips() {
+	client, err := uber.NewClientFromOAuth2File(os.ExpandEnv("$HOME/.uber/credentials.json"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	aWeekAgo := time.Now().Add(-1 * time.Hour * 7 * 24)
+	yesterday := time.Now().Add(-1 * time.Hour * 24)
+	trips, err := client.ListDriverTrips(&uber.DriverInfoQuery{
+		StartDate:     &aWeekAgo,
+		EndDate:       &yesterday,
+		MaxPageNumber: 2,
+		Offset:        4,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	for page := range trips.Pages {
+		if page.Err != nil {
+			fmt.Printf("%d err: %v\n", page.PageNumber, page.Err)
+			continue
+		}
+		for i, trip := range page.Trips {
+			fmt.Printf("\t%d:: DriverID: %q\nFare: %.2f\n%#v\n", i, trip.DriverID, trip.Fare, trip)
+		}
+		fmt.Println()
+	}
+}

v1/deliveries.go

@@ -59,20 +59,22 @@ type Item struct {
 }
 
 type Endpoint struct {
-	Location *Location `json:"location"`
+	Location *Location `json:"location,omitempty"`
 	Contact  *Contact  `json:"contact,omitempty"`
 
 	// Special instructions for the endpoint. This field
 	// is optional and it is limited to 256 characters.
 	SpecialInstructions otils.NullableString `json:"special_instructions,omitempty"`
 
-	SignatureRequired bool `json:"signature_required"`
+	SignatureRequired bool `json:"signature_required,omitempty"`
 
 	// Indicates if the delivery includes alcohol. This
 	// feature is only available to whitelisted businesses.
-	IncludesAlcohol bool `json:"includes_alcohol"`
+	IncludesAlcohol bool `json:"includes_alcohol,omitempty"`
 
-	ETAMinutes int `json:"eta"`
+	ETAMinutes int `json:"eta,omitempty"`
+
+	TimestampUnix int64 `json:"timestamp,omitempty"`
 }
 
 type Contact struct {

v1/driver.go

@@ -54,6 +54,70 @@ const (
 	defaultThrottleDuration = 150 * time.Millisecond
 )
 
+type DriverInfoResponse struct {
+	Cancel func()
+	Pages  <-chan *DriverInfoPage
+}
+
+type driverInfoWrap struct {
+	Count    int        `json:"count"`
+	Limit    int        `json:"limit"`
+	Offset   int        `json:"offset"`
+	Payments []*Payment `json:"payments"`
+	Trips    []*Trip    `json:"trips"`
+}
+
+func (dpq *DriverInfoQuery) toRealDriverQuery() *realDriverQuery {
+	rdpq := &realDriverQuery{
+		Offset: dpq.Offset,
+	}
+	if dpq.StartDate != nil {
+		rdpq.StartTimeUnix = dpq.StartDate.Unix()
+	}
+	if dpq.EndDate != nil {
+		rdpq.EndTimeUnix = dpq.EndDate.Unix()
+	}
+	return rdpq
+}
+
+// realDriverQuery because it is the 1-to-1 match
+// with the fields sent it to query for the payments.
+// DriverQuery is just there for convenience and
+// easy API usage from callers e.g passing in a date without
+// having to worry about its exact Unix timestamp.
+type realDriverQuery struct {
+	Offset        int   `json:"offset,omitempty"`
+	LimitPerPage  int   `json:"limit,omitempty"`
+	StartTimeUnix int64 `json:"from_time,omitempty"`
+	EndTimeUnix   int64 `json:"to_time,omitempty"`
+}
+
+type DriverInfoQuery struct {
+	Offset int `json:"offset,omitempty"`
+
+	// LimitPerPage is the number of items to retrieve per page.
+	// Default is 5, maximum is 50.
+	LimitPerPage int `json:"limit,omitempty"`
+
+	StartDate *time.Time `json:"start_date,omitempty"`
+	EndDate   *time.Time `json:"end_date,omitempty"`
+
+	MaxPageNumber int `json:"max_page_number,omitempty"`
+
+	Throttle time.Duration `json:"throttle,omitempty"`
+}
+
+type DriverInfoPage struct {
+	PageNumber int        `json:"page_number,omitempty"`
+	Payments   []*Payment `json:"payments,omitempty"`
+	Trips      []*Trip    `json:"trips,omitempty"`
+	Err        error      `json:"error"`
+}
+
+func (c *Client) ListDriverTrips(dpq *DriverInfoQuery) (*DriverInfoResponse, error) {
+	return c.listDriverInfo(dpq, "/partners/trips")
+}
+
 // DriverPayments returns the payments for the given driver.
 // Payments are available at this endpoint in near real-time. Some entries,
 // such as "device_subscription" will appear on a periodic basis when actually
@@ -63,9 +127,13 @@ const (
 // there will be no payments associated and the response will always be an empty
 // array. Drivers working for fleet managers will receive payments from the fleet
 // manager and not from Uber.
-func (c *Client) ListDriverPayments(dpq *DriverPaymentsQuery) (*DriverPaymentsResponse, error) {
+func (c *Client) ListDriverPayments(dpq *DriverInfoQuery) (*DriverInfoResponse, error) {
+	return c.listDriverInfo(dpq, "/partners/payments")
+}
+
+func (c *Client) listDriverInfo(dpq *DriverInfoQuery, path string) (*DriverInfoResponse, error) {
 	if dpq == nil {
-		dpq = new(DriverPaymentsQuery)
+		dpq = new(DriverInfoQuery)
 	}
 
 	throttleDuration := dpq.Throttle
@@ -80,22 +148,22 @@ func (c *Client) ListDriverPayments(dpq *DriverPaymentsQuery) (*DriverPaymentsRe
 		return maxPageNumber > 0 && pageNumber >= maxPageNumber
 	}
 
-	baseURL := fmt.Sprintf("%s/partners/payments", c.baseURL(driverV1API))
-	rdpq := dpq.toRealDriverPaymentsQuery()
+	baseURL := fmt.Sprintf("%s%s", c.baseURL(driverV1API), path)
+	rdpq := dpq.toRealDriverQuery()
 	limitPerPage := rdpq.LimitPerPage
 	if limitPerPage <= 0 {
 		limitPerPage = defaultDriverPaymentsLimitPerPage
 	}
 
 	cancelChan, cancelFn := makeCancelParadigm()
-	resChan := make(chan *DriverPaymentsPage)
+	resChan := make(chan *DriverInfoPage)
 	go func() {
 		defer close(resChan)
 
 		pageNumber := 0
 
 		for {
-			curPage := new(DriverPaymentsPage)
+			curPage := new(DriverInfoPage)
 			curPage.PageNumber = pageNumber
 
 			qv, err := otils.ToURLValues(rdpq)
@@ -123,17 +191,21 @@ func (c *Client) ListDriverPayments(dpq *DriverPaymentsQuery) (*DriverPaymentsRe
 				return
 			}
 
-			recv := new(driverPaymentsWrap)
+			recv := new(driverInfoWrap)
 			if err := json.Unmarshal(blob, recv); err != nil {
 				curPage.Err = err
 				resChan <- curPage
 				return
 			}
-			if len(recv.Payments) == 0 { // No payments sent back, so sign that we are at the end
+
+			// No payments nor trips sent back, so a sign that we are at the end
+			if len(recv.Payments) == 0 && len(recv.Trips) == 0 {
 				return
 			}
 
+			curPage.Trips = recv.Trips
 			curPage.Payments = recv.Payments
+
 			resChan <- curPage
 
 			pageNumber += 1
@@ -151,68 +223,10 @@ func (c *Client) ListDriverPayments(dpq *DriverPaymentsQuery) (*DriverPaymentsRe
 		}
 	}()
 
-	resp := &DriverPaymentsResponse{
+	resp := &DriverInfoResponse{
 		Cancel: cancelFn,
 		Pages:  resChan,
 	}
 
 	return resp, nil
 }
-
-type DriverPaymentsResponse struct {
-	Cancel func()
-	Pages  <-chan *DriverPaymentsPage
-}
-
-type driverPaymentsWrap struct {
-	Count    int        `json:"count"`
-	Limit    int        `json:"limit"`
-	Offset   int        `json:"offset"`
-	Payments []*Payment `json:"payments"`
-}
-
-func (dpq *DriverPaymentsQuery) toRealDriverPaymentsQuery() *realDriverPaymentsQuery {
-	rdpq := &realDriverPaymentsQuery{
-		Offset: dpq.Offset,
-	}
-	if dpq.StartDate != nil {
-		rdpq.StartTimeUnix = dpq.StartDate.Unix()
-	}
-	if dpq.EndDate != nil {
-		rdpq.EndTimeUnix = dpq.EndDate.Unix()
-	}
-	return rdpq
-}
-
-// realDriverPaymentsQuery because it is the 1-to-1 match
-// with the fields sent it to query for the payments.
-// DriverPaymentsQuery is just there for convenience and
-// easy API usage from callers e.g passing in a date without
-// having to worry about its exact Unix timestamp.
-type realDriverPaymentsQuery struct {
-	Offset        int   `json:"offset,omitempty"`
-	LimitPerPage  int   `json:"limit,omitempty"`
-	StartTimeUnix int64 `json:"from_time,omitempty"`
-	EndTimeUnix   int64 `json:"to_time,omitempty"`
-}
-
-type DriverPaymentsQuery struct {
-	Offset int `json:"offset,omitempty"`
-
-	// LimitPerPage is the number of items to retrieve per page.
-	// Default is 5, maximum is 50.
-	LimitPerPage int `json:"limit,omitempty"`
-
-	StartDate *time.Time `json:"start_date,omitempty"`
-	EndDate   *time.Time `json:"end_date,omitempty"`
-
-	MaxPageNumber int `json:"max_page_number,omitempty"`
-
-	Throttle time.Duration `json:"throttle,omitempty"`
-}
-
-type DriverPaymentsPage struct {
-	PageNumber int        `json:"page_number,omitempty"`
-	Payments   []*Payment `json:"payments,omitempty"`
-	Err        error      `json:"error"`
-}

v1/history.go

@@ -42,11 +42,30 @@ type Trip struct {
 
 	ProductID string `json:"product_id,omitempty"`
 	RequestID string `json:"request_id,omitempty"`
+	TripID    string `json:"trip_id,omitempty"`
+	DriverID  string `json:"driver_id,omitempty"`
 
 	Unit string `json:"distance_unit,omitempty"`
 
+	Duration         otils.NullableFloat64 `json:"duration,omitempty"`
 	DurationEstimate otils.NullableFloat64 `json:"duration_estimate,omitempty"`
+
+	Distance         otils.NullableFloat64 `json:"distance,omitempty"`
 	DistanceEstimate otils.NullableFloat64 `json:"distance_estimate,omitempty"`
+
+	VehicleID otils.NullableString `json:"vehicle_id,omitempty"`
+
+	SurgeMultiplier otils.NullableFloat64 `json:"surge_multiplier,omitempty"`
+	Fare            otils.NullableFloat64 `json:"fare,omitempty"`
+	Dropoff         *Endpoint             `json:"dropoff,omitempty"`
+	Pickup          *Endpoint             `json:"pickup,omitempty"`
+	StatusChanges   []*StatusChange       `json:"status_changes,omitempty"`
+	CurrencyCode    CurrencyCode          `json:"currency_code,omitempty"`
+}
+
+type StatusChange struct {
+	Status        Status `json:"status,omitempty"`
+	TimestampUnix int64  `json:"timestamp,omitempty"`
 }
 
 type Place struct {

v1/testdata/driver_trips_0.json

@@ -0,0 +1,87 @@
+{
+  "count": 1200,
+  "limit": 2,
+  "trips": [
+    {
+      "fare": 6.2,
+      "dropoff": {
+        "timestamp": 1502844378
+      },
+      "vehicle_id": "0082b54a-6a5e-4f6b-b999-b0649f286381",
+      "distance": 0.37,
+      "start_city": {
+        "latitude": 38.3498,
+        "display_name": "Charleston, WV",
+        "longitude": -81.6326
+      },
+      "status_changes": [
+        {
+          "status": "accepted",
+          "timestamp": 1502843899
+        },
+        {
+          "status": "driver_arrived",
+          "timestamp": 1502843900
+        },
+        {
+          "status": "trip_began",
+          "timestamp": 1502843903
+        },
+        {
+          "status": "completed",
+          "timestamp": 1502844378
+        }
+      ],
+      "surge_multiplier": 1,
+      "pickup": {
+        "timestamp": 1502843903
+      },
+      "driver_id": "8LvWuRAq2511gmr8EMkovekFNa2848lyMaQevIto-aXmnK9oKNRtfTxYLgPq9OSt8EzAu5pDB7XiaQIrcp-zXgOA5EyK4h00U6D1o7aZpXIQah--U77Eh7LEBiksj2rahB==",
+      "status": "completed",
+      "duration": 475,
+      "trip_id": "b5613b6a-fe74-4704-a637-50f8d51a8bb1",
+      "currency_code": "USD"
+    },
+    {
+      "fare": 8.2,
+      "dropoff": {
+        "timestamp": 1502846443
+      },
+      "vehicle_id": "f227de83-0f6a-4422-a733-1e8b781b6ff7",
+      "distance": 2.11,
+      "start_city": {
+        "latitude": 38.3498,
+        "display_name": "Charleston, WV",
+        "longitude": -81.6326
+      },
+      "status_changes": [
+        {
+          "status": "accepted",
+          "timestamp": 1502844744
+        },
+        {
+          "status": "driver_arrived",
+          "timestamp": 1502843900
+        },
+        {
+          "status": "trip_began",
+          "timestamp": 1502843903
+        },
+        {
+          "status": "completed",
+          "timestamp": 1502844378
+        }
+      ],
+      "surge_multiplier": 1.93,
+      "pickup": {
+        "timestamp": 1502843903
+      },
+      "driver_id": "8LvWuRAq2511gmr8EMkovekFNa2848lyMaQevIto-aXmnK9oKNRtfTxYLgPq9OSt8EzAu5pDB7XiaQIrcp-zXgOA5EyK4h00U6D1o7aZpXIQah--U77Eh7LEBiksj2rahB==",
+      "status": "completed",
+      "duration": 475,
+      "trip_id": "b5613b6a-fe74-4704-a637-50f8d51a8bb1",
+      "currency_code": "USD"
+    }
+  ],
+  "offset": 0
+}

v1/testdata/driver_trips_10.json

@@ -0,0 +1 @@
+{}