package com.bbg.tb.utility;

import java.util.Random;

import com.bbg.tb.mobile.Mobile;

public class Formula {

	public static Random random = new Random();

	public static void seed(long s) {
		random.setSeed(s);
	}

	public static int d20() {
		return random.nextInt(20);
	}

	public static int getSavingThrow(Mobile m, String stat) {
		try {
			return d20() + abilityCheck(m, stat) + proficiencyCheck(m, stat + "_save");
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}

	public static int dexSave(Mobile m) {
		return getSavingThrow(m, "dexterity");
	}

	public static int intSave(Mobile m) {
		return getSavingThrow(m, "intelligence");
	}

	public static int strSave(Mobile m) {
		return getSavingThrow(m, "strength");
	}

	public static int conSave(Mobile m) {
		return getSavingThrow(m, "constitution");
	}

	public static int wisSave(Mobile m) {
		return getSavingThrow(m, "wisdom");
	}

	public static int chaSave(Mobile m) {
		return getSavingThrow(m, "charisma");
	}

	public static float initiativeCheck(Mobile m) {
		try {
			float check = d20() + dexCheck(m) + ((boolean) m.fields.get("alert") ? 0 : 5)
					+ (int) m.fields.get("initiative_bonus");
			check += ((float) m.fields.get("dexterity") / 100f);
			return check;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}

	public static int skillCheck(Mobile m, String skill) {
		int check = d20();
		switch (skill.toLowerCase()) {
		case "athletics":
			check += strCheck(m);
			break;
		case "acrobatics":
		case "sleight_of_hand":
		case "stealth":
			check += dexCheck(m);
			break;
		case "arcana":
		case "history":
		case "investigation":
		case "nature":
		case "religion":
			check += intCheck(m);
			break;
		case "animal_handling":
		case "insight":
		case "medicine":
		case "perception":
		case "survival":
			check += wisCheck(m);
			break;
		case "deception":
		case "intimidation":
		case "performance":
		case "persuasion":
			check += chaCheck(m);
			break;
		default:
			return 0;
		}
		return check + proficiencyCheck(m, skill);
	}

	public static int proficiencyCheck(Mobile m, String skill) {
		try {
			return (boolean) m.fields.get(skill) ? getProficiencyBonus(m) : 0;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}

	public static int abilityCheck(Mobile m, String stat) {
		try {
			return ((int) m.fields.get(stat) / 2) - 5;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}

	public static int dexCheck(Mobile m) {
		return abilityCheck(m, "dexterity");
	}

	public static int intCheck(Mobile m) {
		return abilityCheck(m, "intelligence");
	}

	public static int strCheck(Mobile m) {
		return abilityCheck(m, "strength");
	}

	public static int conCheck(Mobile m) {
		return abilityCheck(m, "constitution");
	}

	public static int wisCheck(Mobile m) {
		return abilityCheck(m, "wisdom");
	}

	public static int chaCheck(Mobile m) {
		return abilityCheck(m, "charisma");
	}

	public static int getProficiencyBonus(Mobile m) {
		try {
			return (((int) m.fields.get("level") - 1) / 4) + 2;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 2;
	}

	public static int roll(String dice) {
		try {
			dice = dice.replace(" ", "");
			String[] split = dice.split("d");
			int numDice = Integer.parseInt(split[0]);
			int numSides = 0;
			int bonus = 0;
			if (split[1].indexOf("+") < 0) {
				numSides = Integer.parseInt(split[1]);
			} else {
				split = split[1].split("+");
				numSides = Integer.parseInt(split[0]);
				bonus = Integer.parseInt(split[1]);
			}
			int roll = 0;
			for (int i = 0; i < numDice; i++) {
				roll += random.nextInt(numSides);
			}
			return roll + bonus;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}
}