//Created by student A and B collaboratively

// Holds all functions used in multiple files
import { createRequire } from 'module';
const require = createRequire(import.meta.url);
var readlineSync = require('readline-sync');
const { exec } = require("child_process");
import { promisify } from "util";
const execPromise = promisify(exec);
import './variables.js';
import { inventoryMenuM } from './inventory.js';
import { checkPOI } from './poiscreens.js';
import './poiscreens.js';
import os from 'os';
import { exit } from 'process';
import { naturalEncounter } from './encounters.js';

global.isRawModeEnabled = false; // Track whether raw mode is enabled

// Used for basic functions, not game specific
export function userInput(question) { // Basic user input functions, takes in the question to be asked.
    let answer = readlineSync.question(question);
    return(answer);
}

export function randomNumber(min, max) { // Takes in two parameters, min and max, and returns a random number between those boundries.
    while (true) {
        var randNum = Math.floor(Math.random() * (max+1));
        if (randNum >= min) { break; }
    }
    return randNum;
}

// Used for game
export function healthCapCalc() {  // Calculates HP cap given current radPoints
    healthCap = healthCap-radPoints;
    if (health > healthCap) { health = healthCap; }
}

export function radPointsCalc() {  // Calculates radPoints given walk/foodrate
    if (isRadiated == true) {
        radPoints = radPoints + 0.5 * (radSeverity * 10 + 5 * (walkRate + foodRate));
    }
}

export function eatFood() {  // Calculates food amount after a day of eating
    if (food == 0) {
        health = health - walkRate
    } else {
        food = food - walkRate * foodRate
    }
}

export function checkLose() {  // Checks to see if any lose conditions have been met
    if (health <= 0 && food <= 0) {
        death("Starvation");
    }
    if (radPoints >= 100) {
        death("Radiation Poisoning");
    }
    if (health <= 0 && incombat == true) {
        death("Combat Injury");
    }
    if (health <= 0) {
        death("Injury");
    }
    if (day >= 365) {
        timeDeath();
    }
    if (testDeath == true) {
        death("Test Death");
    }
}
// Checks to see what path the player is on and adds the respective amount to the respective location variable
export function calcLocation() {
    if (walkRate == 1) {
        if (path == 0) {
            location++;
        }
        if (path == 1) {
            locationA++;
        }
        if (path == 2) {
            locationB++;
        }
    }
    if (walkRate == 2) {
        if (path == 0) {
            location + 2;
        }
        if (path == 1) {
            locationA + 2;
        }
        if (path == 2) {
            locationB + 2;
        }    
    }
    if (walkRate == 3) {
        if (path == 0) {
            location + 3;
        }
        if (path == 1) {
            locationA + 3;
        }
        if (path == 2) {
            locationB + 3;
        }   
    }
}

// sleep() function
// First detects what os the user is on and assigns it to osPlat
// if osPlat == 'win32' the program runs the shell command 'sleep' with powershell and the desired time parameter
// if it is not equal to 'win32' the program just runs 'sleep' with the desired time parameter
var osPlat = os.platform();
export async function sleep(time) {
    if (osPlat === 'win32') {
        try {
            await execPromise(`powershell sleep ${time}`);
        } catch (error) {
            console.error("Error executing sleep command:", error);
        }
    } else {
        try {
            await execPromise(`sleep ${time}`);
        } catch (error) {
            console.error("Error executing sleep command:", error);
        }
    }
}  

// Calculates a random number to see which death screen you recieve if called and imputs the death cause as a parameter.
function death(deathCause) {
    let random = randomNumber(1,100);
    if (random >= 1 && random <= 33) { death1(deathCause); }
    if (random >= 34 && random <= 66) { death2(deathCause); }
    if (random >= 67 && random <= 99) { death3(deathCause); }
    if (random == 100) { death4(deathCause); }
}

// death1, death2, and death3 all display a death message, similar to those in Fallout 1, along with the cause given as a parameter
function death1(dc) {
    console.clear();
    sleep(2);
    console.log("Your bones wither away in the wasteland...\n\n");
    console.log("            \\|/");
    console.log("  _/\\___<0>  | ");
    console.log("-------------------------------\n\n");
    console.log("You have died of "+dc+"...");
    console.log("Thanks for playing!\n\n");
    sleep(5);
    exit(0);
}

function death2(dc) {
    console.clear();
    sleep(2);
    console.log("The Enclave suffers in the wake of your defeat...\n\n");
    console.log("            \\|/");
    console.log("  _/\\___<0>  | ");
    console.log("-------------------------------\n\n");
    console.log("You have died of "+dc+"...");
    console.log("Thanks for playing!\n\n");
    sleep(5);
    exit(0);
}

function death3(dc) {
    console.clear();
    sleep(2);
    console.log("Not even the radscorpions are interested in your corpse...\n\n");
    console.log("            \\|/");
    console.log("  _/\\___<0>  | ");
    console.log("-------------------------------\n\n");
    console.log("You have died of "+dc+"...");
    console.log("Thanks for playing!\n\n");
    sleep(5);
    exit(0);
}

function death4(dc) {
    console.clear();
    sleep(2);
    console.log("You have been killed, therefore you are dead...\n\n");
    console.log("            \\|/");
    console.log("  _/\\___<0>  | ");
    console.log("-------------------------------\n\n");
    console.log("You have died of "+dc+"...");
    console.log("Thanks for playing!\n\n");
    sleep(5);
    exit(0);
}

function timeDeath() { // The death screen for passing the time limit
    console.clear;
    console.log("Your PIP-Boy starts ringing...\n\n")
    console.log("BEEP...BEEP...BEEP");
    console.log("INCOMING MESAGE FROM: Raven_Rock_Comms-1\n\n");
    console.log("|||||||")
    console.log("||         Enclave Intranet Messager");
    console.log("|||||||")
    console.log("||         Message From: automessager");
    console.log("|||||||\n\n")
    console.log("Dear, "+name+",\n\n");
    console.log("You have failed to faithfully execute the tasks laid before you in a timely manner.");
    console.log("In consequence you have been dishonorably discharged from the Enclave Armed Forces");
    console.log("Please return to the nearest active Enclave Military Installation immeditely\n\n");
    console.log("Signed, Enclave Internal Messager");
    console.clear;
}

var travelFrame = 0;

// Shows the 'frames' of the travel screen, and shows some player stats.
export function travelScreen() {
    if (travelFrame < 0 || travelFrame > 3) {
        travelFrame = 0;
    } else if (travelFrame == 0) {
        console.clear();
        console.log("┌──────────────────────────────────────┐");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                 ◜─◝                  │");
        console.log("│                 ◟_◞                  │");
        console.log("│                 /║\\                  │");
        console.log("│                 \\V/                  │");
        console.log("│                 / \\                  │");
        console.log("│                ▁\\  ▔╹                │");
        console.log("│======================================│");
        console.log("│   .  . - .   .  - .      .    .   -  │");
        console.log("│  - .  .    .    .   .  .   - .      .│");
        console.log("└──────────────────────────────────────┘");
        console.log("Press [SPACE] to open Pip-Boy");
        console.log("Current Health: "+health);
        console.log("Food Amt: "+food);
        if (path == 0) {
            console.log("Distance to next POI: " + (pois[poiCounter].location-location));
        }
        if (path == 1) {
            console.log("Distance to next POI: " + (pois[poiCounter].location-locationA));
        }
        if (path == 2) {
            console.log("Distance to next POI: " + (pois[poiCounter].location-locationB));
        }
        travelFrame++
    } else if (travelFrame == 1) {
        console.clear();
        console.log("┌──────────────────────────────────────┐");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                 ◜─◝                  │");
        console.log("│                 ◟_◞                  │");
        console.log("│                 /║\\                  │");
        console.log("│                 \\V/                  │");
        console.log("│                  \\                   │");
        console.log("│                 ▁│▔╹                 │");
        console.log("│======================================│");
        console.log("│  -   . - .   .  .   - . -     .      │");
        console.log("│  -  .    .  -   .   .  .   -        .│");
        console.log("└──────────────────────────────────────┘");
        console.log("Press [SPACE] to open Pip-Boy");
        console.log("Current Health: "+health);
        console.log("Food Amt: "+food);
        console.log("Distance to next POI: " + (pois[poiCounter].location-location));
        travelFrame++
    } else if (travelFrame == 2) {
        console.clear();
        console.log("┌──────────────────────────────────────┐");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                 ◜─◝                  │");
        console.log("│                 ◟_◞                  │");
        console.log("│                 /║\\                  │");
        console.log("│                 \\V/                  │");
        console.log("│                  ╳                   │");
        console.log("│                _/_\\                  │");
        console.log("│======================================│");
        console.log("│  -   . - .   .  .   - . -     .      │");
        console.log("│  -  .    .  -   .   .  .   -        .│");
        console.log("└──────────────────────────────────────┘");
        console.log("Press [SPACE] to open Pip-Boy");
        console.log("Current Health: "+health);
        console.log("Food Amt: "+food);
        console.log("Distance to next POI: " + (pois[poiCounter].location-location));
        travelFrame++
    } else if (travelFrame == 3) {
        console.clear();
        console.log("┌──────────────────────────────────────┐");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                                      │");
        console.log("│                 ◜─◝                  │");
        console.log("│                 ◟_◞                  │");
        console.log("│                 /║\\                  │");
        console.log("│                 \\V/                  │");
        console.log("│                  \\                   │");
        console.log("│                 ▁│▔╹                 │");
        console.log("│======================================│");
        console.log("│  -   . - .   .  .   - . -     .      │");
        console.log("│  -  .    .  -   .   .  .   -        .│");
        console.log("└──────────────────────────────────────┘");
        console.log("Press [SPACE] to open Pip-Boy");
        console.log("Current Health: "+health);
        console.log("Food Amt: "+food);
        console.log("Distance to next POI: " + (pois[poiCounter].location-location));
        travelFrame=0;
    }
}

// This function is run everytime the player 'moves' in the world. It first enables raw mode to detect for the pause button
// If paused it displays pauseScreen();
// If not it runs calcLocation(), radPointsCalc(), healthCapCalc(), checkLose(), travelScreen(), checkPOI(), naturalEncounter(), eatFood(), adds to the day counter, and then re runs the function.
export async function walkPathMain() {
    enableRawMode();
    if (paused) {
        disableRawMode();
        pauseScreen();
        enableRawMode();
    }
    calcLocation();
    radPointsCalc();
    healthCapCalc();
    checkLose();
    travelScreen();
    checkPOI();
    naturalEncounter(location);
    eatFood();
    day++
    await sleep(0.5);
    walkPathMain();
}

// This checks to see if the spacebar is pressed while raw menu is enabled.
// If so it sets paused to true.
process.stdin.resume();
process.stdin.on('data', (key) => {
    if (key.toString() === ' ') {
        paused = true; // Pause the game
    } 
});

// Turns raw mode on, runs the above function when called and sets the variable isRawModeEnabled to true
export function enableRawMode() {
    if (!isRawModeEnabled) {
        process.stdin.setRawMode(true);
        process.stdin.resume();
        isRawModeEnabled = true;
    }
}

// Turns raw mode off and sets the variable isRawModeEnabled to true
export function disableRawMode() {
    if (isRawModeEnabled) {
        process.stdin.setRawMode(false);
        process.stdin.pause();
        isRawModeEnabled = false;
    }
}

// Gives player a menu to resume the game, view inventory, distances, stats, scavenge, and change the speed/food rate
var paused = false;
export function pauseScreen() {
    let pauseInput
    while (true) {
        console.clear();
        console.log ("What would you like to do?");
        console.log ("--------------------------");
        console.log ("1) Resume");
        console.log ("2) View Inventory");
        console.log ("3) View Distances");
        console.log ("4) View Stats");
        console.log ("5) Scavenge");
        console.log ("6) Change Speed/Food Rate");
        pauseInput = userInput("Enter: ");

        // Input validation
        if (pauseInput != "1" && pauseInput != "2" && pauseInput != "3" && pauseInput != "4" && pauseInput != "5" && pauseInput != "6") {
            console.log("Invalid input. Please enter 1, 2, or 3.");
        } else {
            break;
        }
    }
    switch(pauseInput) {
        // Shows all pois on the main path, and the chosen path if the player choses one.
        case "1":
            paused = false;
            break;
        case "2":
            inventoryMenuM();
            break;
        case "3":
            console.clear();
            if (path == 0) {
                console.log("Current Path: Main");
            }
            if (path == 1) {
                console.log("Current Path: A (Southern)");
            }
            if (path == 2) {
                console.log("Current Path: B (Northern)");
            }
            console.log("------------------------");
            for (let i = 0; i < 7; i++) {
                if (pois[i].visited == true) {
                    console.log(pois[i].name+" - "+visited[i]);
                }
                if (pois[i].visited == false) {
                    console.log("??? - "+pois[i].location-location+" location points away");
                }
            }
            if (path == 1) {
                for (let i = poiCounter; i < 14; i++) {
                    if (pois[i].visited == true) {
                        console.log(pois[i].name+" - "+visited[i]);
                    }
                    if (pois[i].visited == false) {
                        console.log("??? "+pois[i].location-locationA+" location points away");
                    }
                }
            }
            if (path == 2) {
                for (let i = poiCounter; i < pois.length; i++) {
                    if (pois[i].visited == true) {
                        console.log(pois[i].name+" - "+visited[i]);
                    }
                    if (pois[i].visited == false) {
                        console.log("??? "+pois[i].location-locationB+" location points away");
                    }
                }
            }
            userInput("\n[Press Enter to return]");
            break;
        case "4":
            // Displays many player stat variables.
            console.clear();
            console.log("Player Stats");
            console.log("-------------");
            console.log("Name: "+name);
            console.log("Level: "+level);
            console.log("Current Health: "+health+"/"+healthCap);
            console.log("Radiation Points: "+radPoints);
            console.log("Radiation Severity: "+radSeverity);
            console.log("Walk Rate: "+walkRate);
            console.log("Food Amt: "+food);
            console.log("Food Rate: "+foodRate);
            console.log("Distance to next POI: " + pois[poiCounter].location-location);
            console.log("Current Path: "+path);
            userInput("\n[Press Enter to return]");
            break;
        case "5":
            scavenge(); // Scavenge is curently not used in game
            break;
        case "6":
            // Gives the player a menu to change the walkRate and foodRate variables.
            console.clear();
            console.log("Current Walk Rate: "+walkRate);
            console.log("Current Food Rate: "+foodRate);
            console.log("---------------------------");
            console.log("What would you like to change?");
            console.log("---------------------------");
            console.log("1) Walk Rate");
            console.log("2) Food Rate");
            let rateInput = userInput("Enter: ");
            switch(rateInput) {
                case "1":
                    console.log("Current Walk Rate: "+walkRate);
                    let walkRateInput = userInput("Enter new Walk Rate (1-3): ");
                    if (walkRateInput >= 1 && walkRateInput <= 3) {
                        walkRate = walkRateInput;
                    } else {
                        console.log("Invalid input. Walk Rate not changed.");
                    }
                    break;
                case "2":
                    console.log("Current Food Rate: "+foodRate);
                    let foodRateInput = userInput("Enter new Food Rate (1-3): ");
                    if (foodRateInput >= 1 && foodRateInput <= 3) {
                        foodRate = foodRateInput;
                    } else {
                        console.log("Invalid input. Food Rate not changed.");
                    }
                    break;
                default:
                    console.log("Invalid input. No changes made.");
            }
            userInput("\n[Press Enter to return]");
            break;
    }
}