DataCache and changes for game update

Recent game update changed pokememes view in pokedeks, so we need to
reflect it by updating parser.

Introducing DataCache - a silver bullet for eliminating lags linked to
database queries. Less queries, more in RAM, faster work. Needs testing
in production environment.

lib/datacache/exported.go

@@ -0,0 +1,76 @@
+// i2_bot – Instinct PokememBro Bot
+// Copyright (c) 2018 Vladimir "fat0troll" Hodakov
+
+package datacache
+
+import (
+	"git.wtfteam.pro/fat0troll/i2_bot/lib/appcontext"
+	"git.wtfteam.pro/fat0troll/i2_bot/lib/datacache/datacacheinterface"
+	"git.wtfteam.pro/fat0troll/i2_bot/lib/dbmapping"
+	"sync"
+)
+
+var (
+	c *appcontext.Context
+)
+
+// DataCache is a function-handling struct for package datacache.
+// Also, it's a data cache: it handles all data, powered by DataCache functions.
+type DataCache struct {
+	// Players — users of bot
+	players      map[int]*dbmapping.Player
+	playersMutex sync.Mutex
+	// Profiles - game profiles, no matter, actual or not
+	profiles      map[int]*dbmapping.Profile
+	profilesMutex sync.Mutex
+	// Current profiles - actual profiles for players, mostly used by bot
+	// Note: int in this array for player ID, not for profile ID
+	currentProfiles      map[int]*dbmapping.Profile
+	currentProfilesMutex sync.Mutex
+	// Pokememes
+	pokememes      map[int]*dbmapping.Pokememe
+	pokememesMutex sync.Mutex
+	// Pokememes with all supported data
+	fullPokememes      map[int]*dbmapping.PokememeFull
+	fullPokememesMutex sync.Mutex
+
+	// Elements
+	elements      map[int]*dbmapping.Element
+	elementsMutex sync.Mutex
+	// Leagues
+	leagues      map[int]*dbmapping.League
+	leaguesMutex sync.Mutex
+	// Locations
+	locations      map[int]*dbmapping.Location
+	locationsMutex sync.Mutex
+	// Weapons
+	weapons      map[int]*dbmapping.Weapon
+	weaponsMutex sync.Mutex
+}
+
+// New is an initialization function for appcontext
+func New(ac *appcontext.Context) {
+	c = ac
+	dc := &DataCache{}
+	c.RegisterDataCacheInterface(datacacheinterface.DataCacheInterface(dc))
+}
+
+// Init is a initialization function for package
+func (dc *DataCache) Init() {
+	c.Log.Info("Initializing DataCache...")
+
+	dc.initElements()
+	dc.loadElements()
+	dc.initLeagues()
+	dc.loadLeagues()
+	dc.initLocations()
+	dc.loadLocations()
+	dc.initWeapons()
+	dc.loadWeapons()
+	dc.initPokememes()
+	dc.loadPokememes()
+	dc.initPlayers()
+	dc.loadPlayers()
+	dc.initProfiles()
+	dc.loadProfiles()
+}