output formatting

client.go

@@ -1,6 +1,7 @@
 package steam
 
 import (
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"strconv"
@@ -21,19 +22,47 @@ func (c *Client) Get(iface, method, version string) (*http.Response, error) {
 	return http.Get(url)
 }
 
-func (c *Client) GetFriendList(userid uint64) (*http.Response, error) {
+func (c *Client) GetFriendList(userid uint64) ([]PlayerFriend, error) {
 	url := fmt.Sprintf("https://api.steampowered.com/ISteamUser/GetFriendList/v1/?key=%s&steamid=%d", c.key, userid)
-	return http.Get(url)
+	res, err := http.Get(url)
+	if err != nil {
+		return nil, errorf(err, "unable to get friend list")
+	}
+	var response struct {
+		V struct {
+			Friends []PlayerFriend `json:"friends"`
+		} `json:"friendslist"`
+	}
+	if err := json.NewDecoder(res.Body).Decode(&response); err != nil {
+		return nil, errorf(err, "unable to parse friends list response")
+	}
+	return response.V.Friends, nil
 }
 
-func (c *Client) ResolveVanityUrl(vanity string) (*http.Response, error) {
+func (c *Client) ResolveVanityUrl(vanity string) (uint64, error) {
+	var v struct {
+		V struct {
+			Id      uint64 `json:"steamid,string"`
+			Success int    `json:"success"`
+		} `json:"response"`
+	}
 	url := fmt.Sprintf("https://api.steampowered.com/ISteamUser/ResolveVanityURL/v0001/?key=%s&vanityurl=%s", c.key, vanity)
-	return http.Get(url)
+	res, err := http.Get(url)
+	if err != nil {
+		return 0, errorf(err, "unable to resolve vanity url")
+	}
+	if err := json.NewDecoder(res.Body).Decode(&v); err != nil {
+		return 0, errorf(err, "unable to decode vanity url response")
+	}
+	if v.V.Success != 1 {
+		return 0, errorf(err, "resolving vanity url returned non-1 status")
+	}
+	return v.V.Id, nil
 }
 
-func (c *Client) GetPlayerSummaries(steamids ...uint64) (*http.Response, error) {
+func (c *Client) GetPlayerSummaries(steamids ...uint64) ([]PlayerSummary, error) {
 	if len(steamids) > 100 {
-		return nil, fmt.Errorf("GetPlayerSummaries accepts a max of 100 ids, saw %d", len(steamids))
+		return nil, errorf(nil, "GetPlayerSummaries accepts a max of 100 ids, saw %d", len(steamids))
 	}
 	ids_s := make([]string, len(steamids))
 	for i := range steamids {
@@ -41,7 +70,19 @@ func (c *Client) GetPlayerSummaries(steamids ...uint64) (*http.Response, error)
 	}
 	ids := strings.Join(ids_s, ",")
 	url := fmt.Sprintf("https://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key=%s&steamids=%s", c.key, ids)
-	return http.Get(url)
+	res, err := http.Get(url)
+	if err != nil {
+		return nil, errorf(err, "unable to call GetPlayerSummaries API")
+	}
+	var response struct {
+		V struct {
+			Players []PlayerSummary `json:"players"`
+		} `json:"response"`
+	}
+	if err := json.NewDecoder(res.Body).Decode(&response); err != nil {
+		return nil, errorf(err, "unable to parse GetPlayerSummaries response")
+	}
+	return response.V.Players, nil
 }
 
 /*

cmd/steam/commands.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"sort"
 	"strconv"
+	"text/tabwriter"
 )
 
 var commands map[string]command
@@ -28,12 +29,24 @@ func init() {
 				if err != nil {
 					bail(1, "bad user id: %s", err)
 				}
-				dump(c.GetFriendList(userid))
+				friends, err := c.GetFriendList(userid)
+				if err != nil {
+					bail(1, "%v", err)
+				}
+				w := tabwriter.NewWriter(os.Stdout, 0, 8, 0, '\t', 0)
+				defer w.Flush()
+				for _, friend := range friends {
+					fmt.Fprintln(w, friend.Oneline())
+				}
 			},
 		},
 		"user-id": command{
 			handler: func(c *steam.Client, args ...string) {
-				dump(c.ResolveVanityUrl(args[0]))
+				userid, err := c.ResolveVanityUrl(args[0])
+				if err != nil {
+					bail(1, err.Error())
+				}
+				fmt.Println(userid)
 			},
 		},
 		"user-details": command{
@@ -49,7 +62,15 @@ func init() {
 					}
 					ids = append(ids, userid)
 				}
-				dump(c.GetPlayerSummaries(ids...))
+				players, err := c.GetPlayerSummaries(ids...)
+				if err != nil {
+					bail(1, "%v", err)
+				}
+				w := tabwriter.NewWriter(os.Stdout, 0, 8, 0, '\t', 0)
+				defer w.Flush()
+				for _, player := range players {
+					fmt.Fprintln(w, player.Oneline())
+				}
 			},
 		},
 		"commands": command{

error.go

@@ -0,0 +1,21 @@
+package steam
+
+import (
+	"fmt"
+)
+
+type ClientError struct {
+	msg    string
+	parent error
+}
+
+func (c ClientError) Error() string {
+	if c.parent == nil {
+		return fmt.Sprintf("steam client error: %s", c.msg)
+	}
+	return fmt.Sprintf("steam client error: %s: %v", c.msg, c.parent)
+}
+
+func errorf(parent error, msg string, args ...interface{}) error {
+	return ClientError{msg: fmt.Sprintf(msg, args...), parent: parent}
+}

player.go

@@ -0,0 +1,35 @@
+package steam
+
+import (
+	"fmt"
+)
+
+type PlayerSummary struct {
+	SteamId        uint64 `json:"steamid,string"`
+	Visibility     int    `json:"communityvisibilitystate"`
+	ProfileState   int    `json:"profilestate"`
+	PersonaName    string `json:"personaname"`
+	LastLogOff     int64  `json:"lastlogoff"`
+	ProfileUrl     string `json:"profileurl"`
+	Avatar         string `json:"avatar"`
+	AvatarMedium   string `json:"avatarmedium"`
+	AvatarFull     string `json:"avatarfull"`
+	PersonaState   int    `json:"personastate"`
+	LocCountryCode string `json:"loccountrycode"`
+	LocStateCode   string `json:"locstatecode"`
+	LocCityID      int    `json:"loccityid"`
+}
+
+func (p PlayerSummary) Oneline() string {
+	return fmt.Sprintf("%d\t%s\t%s", p.SteamId, p.PersonaName, p.ProfileUrl)
+}
+
+type PlayerFriend struct {
+	SteamId      uint64 `json:"steamid,string"`
+	Relationship string `json:"relationship"`
+	FriendSince  int    `json:"friend_since"`
+}
+
+func (p PlayerFriend) Oneline() string {
+	return fmt.Sprintf("%d\t%s\t%d", p.SteamId, p.Relationship, p.FriendSince)
+}