/*
Slangin'
State Management
Author: Rudis Muiznieks
License: WTFPL
*/

void initializeNewGame() {
  sGameState = STATE_TURN_MENU;
  pMoney = 10000000; // 2000
  pLoanAmount = 5000;
  pSavingsAmount = 0;
  pLocation = LOC_BRONX;
  pGuns = 0;
  pCapacity = 100;
  pHealth = 50;

  for (int i = 0; i < 6; i++) {
    pInventory[i] = 0;
  }

  sCurrentDay = 0;
  incrementDay(); // start on day 1

  sRandomEvent = 0; // no event on first day
}

void incrementDay() {
  sCurrentDay++;

  // TODO: check for game over

  // generate new drug prices
  sDrugPrices[DRUG_COCAINE] = random(12001) + 16000;
  sDrugPrices[DRUG_HEROINE] = random(7001) + 5000;
  sDrugPrices[DRUG_ACID] = (random(35) + 10) * 100;
  sDrugPrices[DRUG_WEED] = (random(43) + 33) * 10;
  sDrugPrices[DRUG_SPEED] = (random(16) + 7) * 10;
  sDrugPrices[DRUG_LUDES] = (random(5) + 1) * 10;
}

void handleMenuAction() {
  screenInitialized = false;
  switch (sGameState) {
    case STATE_TITLE:
      switch (menuSelected) {
        case 0: // new game
          initializeNewGame();
          break;
          // TODO: continue/load saved
      }
      break;

    case STATE_TURN_MENU:
      sPreviousGameState = STATE_TURN_MENU;
      switch (menuSelected) {
        case 0: // trenchcoat
          sGameState = STATE_INVENTORY;
          break;
        case 1: // buy drugs
          sGameState = STATE_BUY_MENU;
          break;
        case 2: // sell drugs
          sGameState = STATE_SELL_MENU;
          break;
        case 3: // jet
          sGameState = STATE_JET_MENU;
          break;
        case 4: // loan shark
          sGameState = STATE_SHARK_MENU;
          break;
        case 5: // bank
          sGameState = STATE_BANK_MENU;
          break;
      }
      break;

    case STATE_JET_MENU:
      break;
    case STATE_BUY_MENU: {
      int remaining = playerCapacityRemaining();
      sPreviousGameState = STATE_BUY_MENU;
      sCurrentDrug = menuSelected;
      if (remaining <= 0) {
        dialog[0] = F("Oops!");
        dialog[1] = F("");
        dialog[2] = F("You can't carry");
        dialog[3] = F("more ");
        dialog[3] += lookupDrug(sCurrentDrug);
        dialog[3] += F("!");
        dialogLength = 4;
        dialogSmall = false;
        sPreviousGameState = sGameState;
        sGameState = STATE_INFO_DIALOG;
      } else if (pMoney < sDrugPrices[sCurrentDrug]) {
        dialog[0] = F("Oops!");
        dialog[1] = F("");
        dialog[2] = F("You can't afford");
        dialog[3] = lookupDrug(sCurrentDrug) + F("!");
        dialogLength = 4;
        dialogSmall = false;
        sPreviousGameState = sGameState;
        sGameState = STATE_INFO_DIALOG;
      } else {
        sGameState = STATE_BUY_QTY_INPUT;
        sCurrentQty = 0;
        sQtyMax = floor(pMoney / (float)sDrugPrices[sCurrentDrug]);
        if (remaining < sQtyMax) sQtyMax = remaining;
      }
      break;
    }
    case STATE_SELL_MENU:
      sPreviousGameState = STATE_SELL_MENU;
      sCurrentDrug = menuSelected;
      if (pInventory[sCurrentDrug] > 0) {
        sGameState = STATE_SELL_QTY_INPUT;
        sCurrentQty = 0;
        sQtyMax = pInventory[sCurrentDrug];
      } else {
        dialog[0] = F("Oops!");
        dialog[1] = F("");
        dialog[2] = F("You don't have any");
        dialog[3] = lookupDrug(sCurrentDrug) + F("!");
        dialogLength = 4;
        dialogSmall = false;
        sPreviousGameState = sGameState;
        sGameState = STATE_INFO_DIALOG;
      }
      break;
    case STATE_SHARK_MENU:
    case STATE_BANK_MENU:
      break;
  }
}

bool checkBackedOut(const bool eitherButton) {
  if (arduboy.justPressed(B_BUTTON) ||
      (eitherButton && arduboy.justPressed(A_BUTTON))) {
    screenInitialized = false;
    sGameState = sPreviousGameState;
    return true;
  }
  return false;
}

int playerCapacityRemaining() {
  int qty = 0;
  for (int i = 0; i < 6; i++) {
    qty += pInventory[i];
  }
  return pCapacity - qty;
}