func (c *Client) getPartialPartnerInventory(other steamid.SteamId, contextId uint64, appId uint32, offerId *uint64, start *uint) (*inventory.PartialInventory, error) {
data := map[string]string{
"sessionid": c.sessionId,
"partner": other.ToString(),
"contextid": strconv.FormatUint(contextId, 10),
"appid": strconv.FormatUint(uint64(appId), 10),
}
if start != nil {
data["start"] = strconv.FormatUint(uint64(*start), 10)
}
baseUrl := "https://steamcommunity.com/tradeoffer/%v/"
if offerId != nil {
baseUrl = fmt.Sprintf(baseUrl, *offerId)
} else {
baseUrl = fmt.Sprintf(baseUrl, "new")
}
req, err := http.NewRequest("GET", baseUrl+"partnerinventory/?"+netutil.ToUrlValues(data).Encode(), nil)
if err != nil {
panic(err)
}
req.Header.Add("Referer", baseUrl+"?partner="+strconv.FormatUint(uint64(other.GetAccountId()), 10))
return inventory.DoInventoryRequest(c.client, req)
}
// Get duration of escrow in days. Call this before sending a trade offer
func (c *Client) GetPartnerEscrowDuration(other steamid.SteamId, accessToken *string) (*EscrowDuration, error) {
data := map[string]string{
"partner": strconv.FormatUint(uint64(other.GetAccountId()), 10),
}
if accessToken != nil {
data["token"] = *accessToken
}
return c.getEscrowDuration("https://steamcommunity.com/tradeoffer/new/?" + netutil.ToUrlValues(data).Encode())
}
// Sends a new trade offer to the given Steam user. You can optionally specify an access token if you've got one.
// In addition, `counteredOfferId` can be non-nil, indicating the trade offer this is a counter for.
// On success returns trade offer id
func (c *Client) Create(other steamid.SteamId, accessToken *string, myItems, theirItems []TradeItem, counteredOfferId *uint64, message string) (uint64, error) {
// Create new trade offer status
to := map[string]interface{}{
"newversion": true,
"version": 3,
"me": map[string]interface{}{
"assets": myItems,
"currency": make([]struct{}, 0),
"ready": false,
},
"them": map[string]interface{}{
"assets": theirItems,
"currency": make([]struct{}, 0),
"ready": false,
},
}
jto, err := json.Marshal(to)
if err != nil {
panic(err)
}
// Create url parameters for request
data := map[string]string{
"sessionid": c.sessionId,
"serverid": "1",
"partner": other.ToString(),
"tradeoffermessage": message,
"json_tradeoffer": string(jto),
}
var referer string
if counteredOfferId != nil {
referer = fmt.Sprintf("https://steamcommunity.com/tradeoffer/%d/", *counteredOfferId)
data["tradeofferid_countered"] = strconv.FormatUint(*counteredOfferId, 10)
} else {
// Add token for non-friend offers
if accessToken != nil {
params := map[string]string{
"trade_offer_access_token": *accessToken,
}
paramsJson, err := json.Marshal(params)
if err != nil {
panic(err)
}
data["trade_offer_create_params"] = string(paramsJson)
referer = "https://steamcommunity.com/tradeoffer/new/?partner=" + strconv.FormatUint(uint64(other.GetAccountId()), 10) + "&token=" + *accessToken
} else {
referer = "https://steamcommunity.com/tradeoffer/new/?partner=" + strconv.FormatUint(uint64(other.GetAccountId()), 10)
}
}
// Create request
req := netutil.NewPostForm("https://steamcommunity.com/tradeoffer/new/send", netutil.ToUrlValues(data))
req.Header.Add("Referer", referer)
// Send request
resp, err := c.client.Do(req)
if err != nil {
return 0, err
}
defer resp.Body.Close()
t := new(struct {
StrError string `json:"strError"`
TradeOfferId uint64 `json:"tradeofferid,string"`
})
if err = json.NewDecoder(resp.Body).Decode(t); err != nil {
return 0, err
}
// strError code descriptions:
// 15 invalide trade access token
// 16 timeout
// 20 wrong contextid
// 25 can't send more offers until some is accepted/cancelled...
// 26 object is not in our inventory
// error code names are in internal/steamlang/enums.go EResult_name
if t.StrError != "" {
return 0, newSteamErrorf("create error: %v\n", t.StrError)
}
if resp.StatusCode != 200 {
return 0, fmt.Errorf("create error: status code %d", resp.StatusCode)
}
if t.TradeOfferId == 0 {
return 0, newSteamErrorf("create error: steam returned 0 for trade offer id")
}
return t.TradeOfferId, nil
}