func getItemPrices(
db evego.Database,
mkt evego.Market,
req *[]queryItem,
station *evego.Station,
loc string) (*map[string]responseItem, error) {
respItems := make(map[string]responseItem)
for _, i := range *req {
dbItem, err := db.ItemForName(i.ItemName)
if err != nil {
continue
}
var (
item responseItem
orders *[]evego.Order
)
if station != nil {
orders, err = mkt.OrdersInStation(dbItem, station)
} else {
orders, err = mkt.OrdersForItem(dbItem, loc, evego.AllOrders)
}
if err != nil {
return nil, fmt.Errorf("Unable to retrieve order information for %v: %v", dbItem.Name, err)
}
item = summarizeOrders(db, *orders, dbItem)
respItems[item.ItemName] = item
}
return &respItems, nil
}
// UnusedSalvage returns a web handler function that identifies a user's salvage
// drops that are unused by any blueprint they own.
func UnusedSalvage(localdb db.LocalDB, sde evego.Database, sess server.Sessionizer) web.HandlerFunc {
return func(c web.C, w http.ResponseWriter, r *http.Request) {
s := sess.GetSession(&c, w, r)
myUserID := s.User
charID, err := strconv.Atoi(c.URLParams["charID"])
if err != nil {
http.Error(w, `{"status": "Error", "error": "Invalid character ID supplied."}`,
http.StatusBadRequest)
return
}
salvage, err := localdb.UnusedSalvage(myUserID, charID)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to access database."}`,
http.StatusInternalServerError)
log.Printf("Error accessing database with user %v, character %v: %v", myUserID, charID, err)
return
}
stations := make(map[string]*evego.Station)
itemInfo := make(map[string]*evego.Item)
for i := range salvage {
item := &salvage[i]
if _, found := stations[strconv.Itoa(item.StationID)]; !found {
stn, err := localdb.StationForID(item.StationID)
if err == nil {
stations[strconv.Itoa(item.StationID)] = stn
} else {
// This should really not friggin' happen.
http.Error(w, `{"status": "Error", "error": "Unable to look up station/outpost."}`,
http.StatusInternalServerError)
log.Printf("Unable to look up station/outpost ID %v: %v", item.StationID, err)
return
}
}
typeIDStr := strconv.Itoa(item.TypeID)
if _, found := itemInfo[typeIDStr]; !found {
thisItem, err := sde.ItemForID(item.TypeID)
if err == nil {
itemInfo[typeIDStr] = thisItem
}
}
}
response := struct {
Items []evego.InventoryItem `json:"items"`
Stations map[string]*evego.Station `json:"stations"`
ItemInfo map[string]*evego.Item `json:"itemInfo"`
}{salvage, stations, itemInfo}
salvageJSON, err := json.Marshal(&response)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to marshal JSON."}`,
http.StatusInternalServerError)
log.Printf("Error marshalling JSON unused salvage with user %v, character %v: %v", myUserID, charID, err)
return
}
w.Write(salvageJSON)
return
}
}
// ItemsMarketValue returns a handler that takes as input a JSON
// array of items and their quantities, plus a specified station
// or region, and computes the items' value.
//
// FIXME: Should return all buy orders within range for the queried system.
func ItemsMarketValue(db evego.Database, mkt evego.Market, xmlAPI evego.XMLAPI) web.HandlerFunc {
return func(c web.C, w http.ResponseWriter, r *http.Request) {
contentType := r.Header.Get("Content-Type")
contentType, _, err := mime.ParseMediaType(contentType)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Bad request content type"}`,
http.StatusBadRequest)
return
}
if contentType != "application/json" {
http.Error(w, `{"status": "Error", "error": "Request must be of type application/json"}`,
http.StatusUnsupportedMediaType)
return
}
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to process request body"}`,
http.StatusBadRequest)
return
}
var req []queryItem
err = json.Unmarshal(reqBody, &req)
if err != nil {
http.Error(w, fmt.Sprintf("Unable to process request JSON: %v", err), http.StatusBadRequest)
w.Write([]byte(`{"status": "Error"}`))
return
}
loc := c.URLParams["location"]
stationIDStr, isStation := c.URLParams["id"]
var station *evego.Station
if isStation {
// Get station / outpost object.
stationID, _ := strconv.Atoi(stationIDStr)
station, err = db.StationForID(stationID)
if err != nil {
// Not a station; should be an outpost.
station, err = xmlAPI.OutpostForID(stationID)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to identify location"}`,
http.StatusBadRequest)
return
}
}
}
respItems, err := getItemPrices(db, mkt, &req, station, loc)
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to retrieve order information"}`,
http.StatusBadRequest)
return
}
respJSON, _ := json.Marshal(respItems)
w.Write(respJSON)
}
}
// Convert the station/outpost object provided by evego's API into a more
// useful JSON object to be sent to the client.
func stationFromAPI(db evego.Database, s *evego.Station, isOutpost bool) station {
system, _ := db.SolarSystemForID(s.SystemID)
stn := station{
Name: s.Name,
ID: s.ID,
SystemName: system.Name,
Constellation: system.Constellation,
Region: system.Region,
Owner: s.Corporation,
OwnerID: s.CorporationID,
ReprocessingEfficiency: s.ReprocessingEfficiency,
}
// Calculate rounded security as displayed in client—see
// http://wiki.eveuniversity.org/System_Security for rules.
if system.Security >= 0.05 || system.Security < 0.00 {
// high or low based on rounding.
stn.Security = roundSecurity(system.Security)
} else {
// lowsec, not nullsec—rounds up.
stn.Security = 0.1
}
if isOutpost {
stn.Outpost = true
// Reprocessing efficiency for outposts isn't provided in the SDE,
// so we default to a basic station.
stn.ReprocessingEfficiency = 0.50
}
return stn
}
// ReprocessOutputValues returns a web handler function that generates a list of
// possible output from reprocessing, along with the Jita sell and buy price of each.
func ReprocessOutputValues(db evego.Database, mkt evego.Market, xmlAPI evego.XMLAPI, cache evego.Cache) web.HandlerFunc {
tickerboard := []queryItem{
{Quantity: 1, ItemName: "Tritanium"},
{Quantity: 1, ItemName: "Pyerite"},
{Quantity: 1, ItemName: "Mexallon"},
{Quantity: 1, ItemName: "Isogen"},
{Quantity: 1, ItemName: "Nocxium"},
{Quantity: 1, ItemName: "Megacyte"},
{Quantity: 1, ItemName: "Zydrine"},
{Quantity: 1, ItemName: "Megacyte"},
}
return func(c web.C, w http.ResponseWriter, r *http.Request) {
// Check cached and use that instead if it's available.
cached, found := cache.Get(reprocessCacheKey)
if found {
w.Write(cached)
return
}
jita, err := db.StationForID(60003760) // Jita IV - Moon 4 - Caldari Navy Assembly Plant
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to retrieve ticker prices"}`,
http.StatusInternalServerError)
log.Printf("Error looking up Jita station info (???): %v", err)
return
}
results, err := getItemPrices(db, mkt, &tickerboard, jita, "")
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to retrieve ticker prices"}`,
http.StatusInternalServerError)
log.Printf("Error getting Jita item prices: %v", err)
return
}
resultsJSON, err := json.Marshal(results)
// Write output to cache as well.
cache.Put(reprocessCacheKey, resultsJSON, time.Now().Add(reprocessCacheTTL))
w.Write(resultsJSON)
}
}
func autocompleteSystems(db evego.Database, search string) *[]evego.SolarSystem {
// Use make to ensure that we actually have a slice rather than just a nil
// pointer.
results := make([]evego.SolarSystem, 0, 5)
log.Printf("searching %v\n", search)
systems, _ := db.SolarSystemsForPattern(search + "%")
for i, s := range systems {
if i >= 10 {
break
}
results = append(results, s)
}
return &results
}
// ReprocessItems returns a handler function that takes as input an item list
// and returns the reprocessing output of each inventory line.
func ReprocessItems(db evego.Database, mkt evego.Market) web.HandlerFunc {
jita, err := db.StationForID(60003760) // Jita IV - Moon 4 - Caldari Navy Assembly Plant
if err != nil {
log.Fatalf("Seriously, guys, something's gone wrong with the database!")
}
return func(c web.C, w http.ResponseWriter, r *http.Request) {
contentType := r.Header.Get("Content-Type")
contentType, _, err := mime.ParseMediaType(contentType)
if err != nil {
http.Error(w, "Bad request content type", http.StatusBadRequest)
w.Write([]byte(`{"status": "Error"}`))
return
}
if contentType != "application/json" {
http.Error(w, "Request must be of type application/json", http.StatusUnsupportedMediaType)
w.Write([]byte(`{"status": "Error"}`))
return
}
reqBody, err := ioutil.ReadAll(r.Body)
if err != nil {
http.Error(w, "Unable to process request body", http.StatusBadRequest)
w.Write([]byte(`{"status": "Error"}`))
return
}
var req reproQuery
err = json.Unmarshal(reqBody, &req)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
w.Write([]byte(`{"status": "Error"}`))
return
}
// Convert 0..100 scale to 0..1.
stationYield := math.Max(math.Min(1, req.StationYield*0.01), 0)
taxRate := math.Max(math.Min(1, req.TaxRate*0.01), 0)
reproSkills := industry.ReproSkills{
ScrapmetalProcessing: req.ScrapmetalSkill,
}
results := make(map[string][]evego.InventoryLine)
for _, i := range req.Items {
item, err := db.ItemForName(i.ItemName)
if err != nil {
continue
}
itemResults, err := industry.ReprocessItem(db, item, i.Quantity, stationYield, taxRate, reproSkills)
if err != nil {
http.Error(w, "Unable to compute reprocessing output", http.StatusInternalServerError)
w.Write([]byte(`{"status": "Error"}`))
return
}
results[item.Name] = itemResults
}
prices := make(map[string]responseItem)
// Loop over each item that was reprocessed.
for _, itemOut := range results {
// For each item in its component materials,
for _, item := range itemOut {
// Check if we already know its price in Jita
itemName := item.Item.Name
_, found := prices[itemName]
if !found {
// If not there, get its price.
myPrices, err := getItemPrices(db, mkt, &[]queryItem{{Quantity: 1, ItemName: itemName}}, jita, "")
if err != nil {
http.Error(w, `{"status": "Error", "error": "Unable to look up prices (reprocessing)"}`,
http.StatusInternalServerError)
return
}
prices[itemName] = (*myPrices)[itemName]
}
}
}
response := reproResults{
Items: results,
Prices: prices,
}
resultsJSON, _ := json.Marshal(response)
w.Write(resultsJSON)
}
}