reimplement itemlevel command (#29)

lgtm

commands/blizzard.go

@@ -0,0 +1,79 @@
+package botcommands
+
+import (
+	"github.com/zewa-crit/zewa-bot/util/commands"
+	"github.com/bwmarrin/discordgo"
+	"os"
+	"errors"
+	"fmt"
+	"time"
+	"github.com/FuzzyStatic/blizzard/worldofwarcraft"
+	"github.com/FuzzyStatic/blizzard"
+	"strings"
+)
+
+func init() {
+	err := checkBlizzDependencies()
+	if err != nil {
+		fmt.Sprintf("error when checking dependencies: %s \nskipping registration of blizzard commands", err)
+		return
+	}
+	commands.RegisterCommand("ilvl", itemLevelCommand, "Outputs item level of character. For more info *!ilvl help*")
+	commands.RegisterCommand("itemlevel", itemLevelCommand, "Alias for *!ilvl*")
+}
+
+func itemLevelCommand(s *discordgo.Session, m *discordgo.MessageCreate, ctx *commands.Context) error {
+	api := getBlizzApi()
+	args := ctx.Args
+	if len(args) == 1 {
+		charIdentifier := strings.Split(args[0], "-")
+		realm := "eredar"
+		inputName := args[0]
+		if len(charIdentifier) > 2 || len(charIdentifier) == 0 || args[0] == "help" {
+			sendItemLevelUsage(s, m)
+			return nil
+		} else if len(charIdentifier) == 2 {
+			inputName = charIdentifier[0]
+			realm = charIdentifier[1]
+		}
+		character, err := api.GetCharacterWithItems(realm, inputName)
+		if err != nil {
+			fmt.Println(err)
+			_, _ = s.ChannelMessageSend(m.ChannelID, fmt.Sprintf("Cannot find a character named %s on %s", inputName, realm))
+			return nil
+		}
+		lastUpdated := time.Unix(0, character.LastModified*int64(time.Millisecond)).Format("2006-01-02 15:04")
+		_, _ = s.ChannelMessageSend(m.ChannelID,
+			fmt.Sprintf("Average Item Level (equipped) for %s: **%d** (last updated %s)",
+				character.Name,
+				character.Items.AverageItemLevelEquipped,
+				lastUpdated))
+	} else {
+		sendItemLevelUsage(s, m)
+	}
+	return nil
+}
+
+func sendItemLevelUsage(s *discordgo.Session, m *discordgo.MessageCreate) {
+	_, _ = s.ChannelMessageSend(m.ChannelID, fmt.Sprint(`The itemlevel command gives information about the equipped item level of a character
+Defaults to EU region and Eredar realm.
+Querying for other regions is not supported.
+Querying for realms with more than one word is not supported.
+To query characters from other realms you can add the name of the realm after the characters name with an "-" between the character name and the realm name, e.g.
+`+ "`!itemlevel Telár-Antonidas`\n"))
+}
+
+func checkBlizzDependencies() error {
+	token := os.Getenv("BLIZZ_API_KEY")
+	if len(token) == 0 {
+		return errors.New("environment variable \"BLIZZ_API_KEY\" not set")
+	}
+	return nil
+}
+
+func getBlizzApi() *worldofwarcraft.WorldOfWarcraft {
+	var api *worldofwarcraft.WorldOfWarcraft
+	blizzApiKey := os.Getenv("BLIZZ_API_KEY")
+	api = worldofwarcraft.New(blizzard.Auth{AccessToken: blizzApiKey, APIKey: blizzApiKey}, blizzard.EU)
+	return api
+}

commands/warcraftlogs.go

@@ -12,7 +12,7 @@ import (
 )
 
 func init() {
-	err := checkDependencies()
+	err := checkWCLDependencies()
 	if err != nil {
 		fmt.Sprintf("error when checking dependencies: %s \nskipping registration of warcraftlogs commands", err)
 		return
@@ -52,7 +52,7 @@ Supported Commands are:
 	return nil
 }
 
-func checkDependencies() error {
+func checkWCLDependencies() error {
 	token := os.Getenv("WCL_TOKEN")
 	if len(token) == 0 {
 		return errors.New("environment variable \"WCL_TOKEN\" not set")