"use strict";

let belongings = {};

let ownedUpgrades = {};
let remainingUpgrades = [];
let showOwnedUpgrades = false;

let effects = {};


let resources = {};

let updateRate = 60;

let currentProductivity = {};
let clickBonus = 0;
let clickVictim = "micro";

let lastTime = 0;

function applyGlobalProdBonuses(productivity) {
  for (let effect of effects["prod-all"]) {

    if (ownedUpgrades[effect.parent]) {
      productivity = effect.apply(productivity);
    }
  }

  return productivity;
}

function calculateProductivity() {
  let productivity = 0;

  for (const [key, value] of Object.entries(belongings)) {
      productivity += productivityOf(key);
  }

  return productivity;
}

// here's where upgrades will go :3

function productivityMultiplierOf(type) {
  let base = 1;

  for (let effect of effects["prod"]) {

    if (ownedUpgrades[effect.parent] && effect.target == type) {
      base = effect.apply(base);
    }
  }

  for (let effect of effects["helper"]) {

    if (ownedUpgrades[effect.parent] && effect.helped == type) {
      base = effect.apply(base, belongings[effect.helper].count);
    }
  }

  return base;
}

function productivityOf(type) {
  let baseProd = buildings[type].prod;

  let prod = baseProd * productivityMultiplierOf(type);

  prod = applyGlobalProdBonuses(prod);

  return prod * belongings[type].count;
}

function costOfBuilding(type) {
  let baseCost = buildings[type].cost
  let countCost = baseCost * Math.pow(1.15, belongings[type].count);

  return Math.round(countCost);
}

function buyBuilding(type) {
  let cost = costOfBuilding(type);

  if (resources.food >= cost) {
    belongings[type].count += 1;
    resources.food -= cost;
  }

  updateProductivity();
  updateClickBonus();

}
// update stuff

function updateDisplay() {

  let newTime = performance.now();
  let delta = newTime - lastTime;
  lastTime = newTime;

  addResources(delta);
  displayResources();
  displayBuildings();
  displayUpgrades(showOwnedUpgrades);

  setTimeout(updateDisplay, 1000/updateRate);
}

function updateProductivity() {
  currentProductivity["food"] = calculateProductivity();
}

function addResources(delta) {
  for (const [resource, amount] of Object.entries(currentProductivity)) {
    resources[resource] += amount * delta / 1000;
  }
}

function displayResources() {
  document.title = "Gorge - " + round(resources.food) + " food";

  replaceChildren(document.querySelector("#resource-list"), renderResources());
}

function renderResources() {
  let list = [];

  for (const [key, value] of Object.entries(resources)) {

    let line1 = render(value, 3, 0) + " " + resourceTypes[key].name;
    let line2 = render(currentProductivity[key], 1, 1) + " " + resourceTypes[key].name + "/sec";

    list.push({"text": line1, "class": "resource-quantity"});
    list.push({"text": line2, "class": "resource-rate"});
  }

  return renderLines(list);
}

function displayBuildings() {
  for (const [key, value] of Object.entries(belongings)) {

    if (!belongings[key].visible) {
      if (resources.food * 10 >= costOfBuilding(key)) {
        unlockBuilding(key);
      } else {
        continue;
      }
        belongings[key].visible = true;
        document.querySelector("#building-" + key).classList.remove("hidden");
    }

    let button = document.querySelector("#building-" + key);

    let name = document.querySelector("#building-" + key + " > .building-button-name");
    let cost = document.querySelector("#building-" + key + " > .building-button-cost");

    name.innerText = value.count + " " + (value.count == 1 ? buildings[key].name : buildings[key].plural);
    cost.innerText = render(costOfBuilding(key)) + " food";

    if (costOfBuilding(key) > resources.food) {
      button.classList.add("building-button-disabled");
      cost.classList.add("building-button-cost-invalid");
    } else {
      button.classList.remove("building-button-disabled");
      cost.classList.add("building-button-cost-valid");
    }
  }
}

function canAfford(cost) {
  for (const [resource, amount] of Object.entries(cost)) {
    if (resources[resource] < amount) {
      return false;
    }
  }

  return true;
}

function spend(cost) {
  for (const [resource, amount] of Object.entries(cost)) {
    resources[resource] -= amount;
  }
}

function switchShowOwnedUpgrades() {
  if (showOwnedUpgrades) {
    document.querySelector("#upgrades").innerText = "Upgrades";
  } else {
    document.querySelector("#upgrades").innerText = "Owned Upgrades";
  }

  showOwnedUpgrades = !showOwnedUpgrades;
}

function displayUpgrades(owned) {
  if (owned) {
    Object.entries(ownedUpgrades).forEach(([key, val]) => {
      let button = document.querySelector("#upgrade-" + key);
      if (val) {
        button.classList.remove("hidden");
      } else {
        button.classList.add("hidden");
      }
    });
  }
  else {
    for (let id of remainingUpgrades) {
      let button = document.querySelector("#upgrade-" + id);
  
      if (ownedUpgrades[id]) {
        button.classList.add("hidden");
        continue;
      }
      if (upgradeReachable(id)) {
        button.classList.remove("hidden");
      } else {
        button.classList.add("hidden");
      }
      if (upgradeAvailable(id)) {
        button.classList.remove("upgrade-button-inactive");
      } else {
        button.classList.add("upgrade-button-inactive");
      }
    }
  
    // we aren't trimming the list of upgrades now
    // because we need to switch between owned and unowned upgrades
    // - thus we need to be able to show or hide anything
    /*
    for (let i = remainingUpgrades.length-1; i >= 0; i--) {
      if (ownedUpgrades[remainingUpgrades[i]]) {
        remainingUpgrades.splice(i, 1);
      }
    }*/
  }
}

function updateClickBonus() {
  let bonus = 0;

  for (let effect of effects["click"]) {
    if (ownedUpgrades[effect.parent]) {
      bonus = effect.apply(bonus, currentProductivity["food"]);
    }
  }

  clickBonus = bonus;
}

function updateClickVictim() {
  for (let effect of effects["click-victim"]) {
    if (ownedUpgrades[effect.parent]) {
      clickVictim = effect.id;
      document.querySelector("#tasty-micro").innerText = "Eat " + buildings[effect.id].name;
    }
  }
}

function buyUpgrade(id, e) {
  if (ownedUpgrades[id]) {
    return;
  }

  let upgrade = upgrades[id];

  if (!upgradeAvailable(id)) {
    return;
  }

  spend(upgrade.cost);

  ownedUpgrades[id] = true;

  let text = "Bought " + upgrade.name + "!";

  clickPopup(text, "upgrade", [e.clientX, e.clientY]);

  updateProductivity();
  updateClickBonus();
  updateClickVictim();
}

function eatPrey() {
  const add = buildings[clickVictim]["prod"] * 10 * productivityMultiplierOf(clickVictim) + clickBonus;
  resources.food += add;
  return add;
}

// setup stuff lol

// we'll initialize the dict of buildings we can own

function setup() {

  // create static data

  createTemplateUpgrades();

  // prepare dynamic stuff

  initializeData();
  createButtons();
  createDisplays();
  registerListeners();
  load();
  unlockAtStart();
  updateProductivity();

}

function unlockAtStart() {
  unlockBuilding("micro");

  for (const [key, value] of Object.entries(belongings)) {
    if (belongings[key].visible) {
      unlockBuilding(key);
    }
  }
}

function unlockBuilding(id) {
  belongings[id].visible = true;
  document.querySelector("#building-" + id).classList.remove("hidden");
}

function initializeData() {
  for (const [key, value] of Object.entries(buildings)) {
    belongings[key] = {};
    belongings[key].count = 0;
    belongings[key].visible = false;
  }

  for (const [key, value] of Object.entries(resourceTypes)) {
    resources[key] = 0;
    currentProductivity[key] = 0;
  }

  for (const [id, upgrade] of Object.entries(upgrades)) {
    ownedUpgrades[id] = false;

    for (let effect of upgrade.effects) {
      if (effects[effect.type] === undefined) {
        effects[effect.type] = [];
      }

      // copy the data and add an entry for the upgrade id that owns the effect

      let newEffect = {};

      for (const [key, value] of Object.entries(effect)) {
        newEffect[key] = value;
      }

      newEffect.parent = id;

      // unfortunate name collision here
      // I'm using apply() to pass on any number of arguments to the
      // apply() function of the effect type

      newEffect.apply = function(...args) { return effect_types[effect.type].apply.apply(null, [effect].concat(args)); }

      effects[effect.type].push(newEffect);
    }

  }
}

function registerListeners() {
  document.querySelector("#tasty-micro").addEventListener("click", (e) => {
    const add = eatPrey();
    const text = "+" + round(add, 1) + " food";
    const gulp = "*glp*";
    clickPopup(text, "food", [e.clientX, e.clientY]);
    clickPopup(gulp, "gulp", [e.clientX, e.clientY]);
  });

  document.querySelector("#save").addEventListener("click", save);

  document.querySelector("#reset").addEventListener("click", reset);

  document.querySelector("#upgrades").addEventListener("click", switchShowOwnedUpgrades);
}

function createButtons() {
  createBuildings();
  createUpgrades();
}

function createBuildings() {
  let container = document.querySelector("#buildings-list");

  for (const [key, value] of Object.entries(buildings)) {
    let button = document.createElement("div");
    button.classList.add("building-button");
    button.classList.add("hidden");
    button.id = "building-" + key;
    let buttonName = document.createElement("div");
    buttonName.classList.add("building-button-name");
    let buttonCost = document.createElement("div");
    buttonCost.classList.add("building-button-cost");

    let buildingIcon = document.createElement("i");
    buildingIcon.classList.add("fas");
    buildingIcon.classList.add(value.icon);

    button.appendChild(buttonName);
    button.appendChild(buttonCost);
    button.appendChild(buildingIcon);
    button.addEventListener("mousemove", function(e) { buildingTooltip(key, e); });
    button.addEventListener("mouseleave", function() { buildingTooltipRemove(); });
    button.addEventListener("click", function() { buyBuilding(key); });
    button.addEventListener("click", function(e) { buildingTooltip(key, e); });

    container.appendChild(button);
  }
}

// do we have previous techs and at least one of each building?

function upgradeReachable(id) {

  if (ownedUpgrades[id]) {
    return false;
  }

  if (upgrades[id].prereqs !== undefined ){
    for (const [type, reqs] of Object.entries(upgrades[id].prereqs)) {
      if (type == "buildings") {
        for (const [building, amount] of Object.entries(reqs)) {
          if (belongings[building].count == 0) {
            return false;
          }
        }
      }
      else if (type == "upgrades") {
        for (let upgrade of reqs) {
          if (!ownedUpgrades[upgrade]) {
            return false;
          }
        }
      }
    }
  }


  return true;
}
function upgradeAvailable(id) {
  if (!upgradeReachable(id)) {
    return false;
  }

  if (!canAfford(upgrades[id].cost)) {
    return false;
  }

  if (upgrades[id].prereqs !== undefined) {
    for (const [type, reqs] of Object.entries(upgrades[id].prereqs)) {
      if (type == "buildings") {
        for (const [building, amount] of Object.entries(upgrades[id].prereqs[type])) {
          if (belongings[building].count < amount) {
            return false;
          }
        }
      } else if (type == "productivity") {
        for (const [key, value] of Object.entries(reqs)) {
          if (currentProductivity[key] < value) {
            return false;
          }
        }
      }
    }
  }


  return true;
}

function createUpgrades() {
  let container = document.querySelector("#upgrades-list");

  for (const [key, value] of Object.entries(upgrades)) {

    remainingUpgrades.push(key);

    let button = document.createElement("div");
    button.classList.add("upgrade-button");
    button.classList.add("hidden");
    button.id = "upgrade-" + key;
    let buttonName = document.createElement("div");
    buttonName.classList.add("upgrade-button-name");
    buttonName.innerText = value.name;

    let upgradeIcon = document.createElement("i");
    upgradeIcon.classList.add("fas");
    upgradeIcon.classList.add(value.icon);
  
    button.appendChild(buttonName);
    button.appendChild(upgradeIcon);

    button.addEventListener("mousemove", function(e) { upgradeTooltip(key, e); });
    button.addEventListener("mouseleave", function() { upgradeTooltipRemove(); });
    button.addEventListener("click", function(e) { buyUpgrade(key, e); });

    container.appendChild(button);
  }
}

function createDisplays() {
  // nop
}

function renderLine(line) {
  let div = document.createElement("div");
  div.innerText = line.text;

  if (line.valid !== undefined) {
    if (line.valid) {
      div.classList.add("cost-met");
    } else {
      div.classList.add("cost-unmet");
    }
  }

  if (line.class !== undefined) {
    for (let entry of line.class.split(",")) {
      div.classList.add(entry);
    }
  }

  return div;
}

function renderLines(lines) {
  let divs = [];

  for (let line of lines) {
    divs.push(renderLine(line));
  }

  return divs;
}

function renderCost(cost) {
  let list = [];

  list.push({
    "text": "Cost:"
  });

  for (const [key, value] of Object.entries(cost)) {
    list.push({
      "text": render(value,0) + " " + resourceTypes[key].name,
      "valid": resources[key] >= value
    });
  }

  return renderLines(list);
}

function renderPrereqs(prereqs) {
  let list = [];

  if (prereqs === undefined) {
    return renderLines(list);
  }

  list.push({
    "text": "Own:"
  });

  for (const [key, value] of Object.entries(prereqs)) {
    if (key == "buildings") {
      for (const [id, amount] of Object.entries(prereqs.buildings)) {
        list.push({
          "text": buildings[id].name + " x" + render(amount,0),
          "valid": belongings[id].count >= amount
        });
      }
    } else if (key == "productivity") {
      for (const [id, amount] of Object.entries(prereqs.productivity)) {
        list.push({
          "text": render(amount,0) + " " + resourceTypes[id].name + "/s",
          "valid": currentProductivity[id] >= amount
        });
      }
    }
  }

  return renderLines(list);
}

function renderEffects(effectList) {
  let list = [];

  for (let effect of effectList) {
    list.push({"text": effect_types[effect.type].desc(effect)});
  }

  return renderLines(list);
}

function clickPopup(text, type, location) {
  const div = document.createElement("div");
  div.textContent = text;

  div.classList.add("click-popup-" + type);

  var direction;

  if (type == "food") {
    direction = -150;
  } else if (type == "gulp") {
    direction = -150;
  } else if (type == "upgrade") {
    direction = -50;
  } else if (type == "info") {
    direction = 0;
  }

  direction *= Math.random() * 0.5 + 1;

  direction = Math.round(direction) + "px"

  div.style.setProperty("--target", direction)

  div.style.left = location[0] + "px";
  div.style.top = location[1] + "px";

  const body = document.querySelector("body");

  body.appendChild(div);

  setTimeout(() => {
    body.removeChild(div);
  }, 2000);
}

function fillTooltip(type, field, content) {
  let item = document.querySelector("#" + type + "-tooltip-" + field);
  if (typeof(content) === "string") {
    item.innerText = content;
  } else {
    replaceChildren(item, content);
  }
}

function upgradeTooltip(id, event) {

  let tooltip = document.querySelector("#upgrade-tooltip");
  tooltip.style.setProperty("display", "inline-block");

  fillTooltip("upgrade", "name", upgrades[id].name);
  fillTooltip("upgrade", "desc", upgrades[id].desc);
  fillTooltip("upgrade", "effect", renderEffects(upgrades[id].effects));
  fillTooltip("upgrade", "cost", renderCost(upgrades[id].cost));
  fillTooltip("upgrade", "prereqs", renderPrereqs(upgrades[id].prereqs));

  let yOffset = tooltip.parentElement.getBoundingClientRect().y;
  let tooltipSize = tooltip.getBoundingClientRect().height;

  let yTrans = Math.round(event.clientY - yOffset);

  var body = document.body,
    html = document.documentElement;

  var height = Math.max(window.innerHeight);

  yTrans = Math.min(yTrans, height - tooltipSize - 150);

  tooltip.style.setProperty("transform", "translate(-220px, " + yTrans + "px)");
}

function upgradeTooltipRemove() {
  let tooltip = document.querySelector("#upgrade-tooltip");

  tooltip.style.setProperty("display", "none");
}

function prodSummary(id) {
  let list = [];

  list.push(
    {"text": "Each " + buildings[id].name + " produces " + round(productivityMultiplierOf(id) * buildings[id].prod,1) + " food/sec"}
  );

  list.push(
    {"text": "Your " + render(belongings[id].count) + " " + (belongings[id].count == 1 ? buildings[id].name + " is": buildings[id].plural + " are") + " producing " + round(productivityOf(id),1) + " food/sec"}
  );

  let percentage = round(100 * productivityOf(id) / currentProductivity["food"], 2);

  if (isNaN(percentage)) {
    percentage = 0;
  }
  list.push(
    {"text": "(" + percentage + "% of all food)"}
  );

  return renderLines(list);
}

function buildingTooltip(id, event) {

  let tooltip = document.querySelector("#building-tooltip");
  tooltip.style.setProperty("display", "inline-block");

  fillTooltip("building", "name", buildings[id].name);
  fillTooltip("building", "desc", buildings[id].desc);
  fillTooltip("building", "cost", render(costOfBuilding(id)) + " food");
  fillTooltip("building", "prod", prodSummary(id));

  let xPos = tooltip.parentElement.getBoundingClientRect().x - 450;
  
  // wow browsers are bad

  var body = document.body,
    html = document.documentElement;

  var height = Math.max( body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight );

  let yPos = Math.min(event.clientY, height - 200);

  tooltip.style.setProperty("transform", "translate(" + xPos + "px, " + yPos  + "px)")
}

function buildingTooltipRemove() {
  let tooltip = document.querySelector("#building-tooltip");

  tooltip.style.setProperty("display", "none");
}

window.onload = function() {
  setup();

  lastTime = performance.now();

  setTimeout(updateDisplay, 1000/updateRate);

  setTimeout(autosave, 60000);
}

function autosave() {
  saveGame();
  let x = window.innerWidth / 2;
  let y = window.innerHeight * 9 / 10;
  clickPopup("Autosaving...", "info", [x, y]);
  setTimeout(autosave, 60000);
}

function save(e) {
  saveGame();
  clickPopup("Saved!", "info", [e.clientX, e.clientY]);
}

function saveGame() {
  let storage = window.localStorage;

  storage.setItem("save-version", "0.0.1");

  storage.setItem("ownedUpgrades", JSON.stringify(ownedUpgrades));

  storage.setItem("resources", JSON.stringify(resources));

  storage.setItem("belongings", JSON.stringify(belongings));
}

function load() {
  let storage = window.localStorage;

  if (!storage.getItem("save-version")) {
    return;
  }

  let newOwnedUpgrades = JSON.parse(storage.getItem("ownedUpgrades"));

  for (const [key, value] of Object.entries(newOwnedUpgrades)) {
    ownedUpgrades[key] = value;
  }

  let newResources = JSON.parse(storage.getItem("resources"));

  for (const [key, value] of Object.entries(newResources)) {
    resources[key] = value;
  }

  let newBelongings = JSON.parse(storage.getItem("belongings"));

  for (const [key, value] of Object.entries(newBelongings)) {
    belongings[key] = value;
  }
}

function reset() {
  window.localStorage.clear();
}