/**
 * TODO
 * Add police clashes
 * balance point to keep them from running out of control
*/

import { Faction } from "../Faction/Faction";
import { Factions } from "../Faction/Factions";

import { numeralWrapper } from "../ui/numeralFormat";

import { dialogBoxCreate } from "../../utils/DialogBox";
import {
    Reviver,
    Generic_toJSON,
    Generic_fromJSON,
} from "../../utils/JSONReviver";

import { exceptionAlert } from "../../utils/helpers/exceptionAlert";
import { getRandomInt } from "../../utils/helpers/getRandomInt";

import { GangMemberUpgrade } from "./GangMemberUpgrade";
import { GangConstants } from "./data/Constants";
import { CONSTANTS } from "../Constants";
import { GangMemberTasks } from "./GangMemberTasks";
import { IAscensionResult } from "./IAscensionResult";

import { AllGangs } from "./AllGangs";
import { GangMember } from "./GangMember";

import { WorkerScript } from "../Netscript/WorkerScript";
import { IPlayer } from "../PersonObjects/IPlayer";


export class Gang {
    facName: string;
    members: GangMember[];
    wanted: number;
    respect: number;

    isHackingGang: boolean;

    respectGainRate: number;
    wantedGainRate: number;
    moneyGainRate: number;

    storedCycles: number;

    storedTerritoryAndPowerCycles: number;

    territoryClashChance: number;
    territoryWarfareEngaged: boolean;

    notifyMemberDeath: boolean;

    constructor(facName = "", hacking = false) {
        this.facName    = facName;
        this.members    = [];
        this.wanted     = 1;
        this.respect    = 1;

        this.isHackingGang = hacking;

        this.respectGainRate = 0;
        this.wantedGainRate = 0;
        this.moneyGainRate = 0;

        // When processing gains, this stores the number of cycles until some
        // limit is reached, and then calculates and applies the gains only at that limit
        this.storedCycles   = 0;

        // Separate variable to keep track of cycles for Territry + Power gang, which
        // happens on a slower "clock" than normal processing
        this.storedTerritoryAndPowerCycles = 0;

        this.territoryClashChance = 0;
        this.territoryWarfareEngaged = false;

        this.notifyMemberDeath = true;
    }

    getPower(): number {
        return AllGangs[this.facName].power;
    }

    getTerritory(): number {
        return AllGangs[this.facName].territory;
    }

    process(numCycles = 1, player: IPlayer): void {
        const CyclesPerSecond = 1000 / CONSTANTS._idleSpeed;

        if (isNaN(numCycles)) {
            console.error(`NaN passed into Gang.process(): ${numCycles}`);
        }
        this.storedCycles += numCycles;

        // Only process if there are at least 2 seconds, and at most 5 seconds
        if (this.storedCycles < 2 * CyclesPerSecond) { return; }
        const cycles = Math.min(this.storedCycles, 5 * CyclesPerSecond);

        try {
            this.processGains(cycles, player);
            this.processExperienceGains(cycles);
            this.processTerritoryAndPowerGains(cycles);
            this.storedCycles -= cycles;
        } catch(e) {
            console.error(`Exception caught when processing Gang: ${e}`);
        }
    }


    processGains(numCycles = 1, player: IPlayer): void {
        // Get gains per cycle
        let moneyGains = 0, respectGains = 0, wantedLevelGains = 0;
        let justice = 0;
        for (let i = 0; i < this.members.length; ++i) {
            respectGains += (this.members[i].calculateRespectGain(this));
            moneyGains += (this.members[i].calculateMoneyGain(this));
            const wantedLevelGain = this.members[i].calculateWantedLevelGain(this);
            wantedLevelGains += wantedLevelGain;
            if(wantedLevelGain < 0) justice++; // this member is lowering wanted.
        }
        this.respectGainRate = respectGains;
        this.wantedGainRate = wantedLevelGains;
        this.moneyGainRate = moneyGains;

        if (typeof respectGains === "number") {
            const gain = respectGains * numCycles;
            this.respect += gain;
            // Faction reputation gains is respect gain divided by some constant
            const fac = Factions[this.facName];
            if (!(fac instanceof Faction)) {
                dialogBoxCreate("ERROR: Could not get Faction associates with your gang. This is a bug, please report to game dev");
            } else {
                const favorMult = 1 + (fac.favor / 100);
                fac.playerReputation += ((player.faction_rep_mult * gain * favorMult) / GangConstants.GangRespectToReputationRatio);
            }

            // Keep track of respect gained per member
            for (let i = 0; i < this.members.length; ++i) {
                this.members[i].recordEarnedRespect(numCycles, this);
            }
        } else {
            console.warn("respectGains calculated to be NaN");
        }
        if (typeof wantedLevelGains === "number") {
            if (this.wanted === 1 && wantedLevelGains < 0) {
                // At minimum wanted, do nothing
            } else {
                const oldWanted = this.wanted;
                let newWanted = oldWanted + (wantedLevelGains * numCycles);
                newWanted = newWanted * (1 - justice * 0.001); // safeguard
                // Prevent overflow
                if (wantedLevelGains <= 0 && newWanted > oldWanted) {
                    newWanted = 1;
                }

                this.wanted = newWanted;
                if (this.wanted < 1) {this.wanted = 1;}
            }
        } else {
            console.warn("ERROR: wantedLevelGains is NaN");
        }
        if (typeof moneyGains === "number") {
            player.gainMoney(moneyGains * numCycles);
            player.recordMoneySource(moneyGains * numCycles, "gang");
        } else {
            console.warn("ERROR: respectGains is NaN");
        }
    }

    processTerritoryAndPowerGains(numCycles = 1): void {
        this.storedTerritoryAndPowerCycles += numCycles;
        if (this.storedTerritoryAndPowerCycles < GangConstants.CyclesPerTerritoryAndPowerUpdate) { return; }
        this.storedTerritoryAndPowerCycles -= GangConstants.CyclesPerTerritoryAndPowerUpdate;

        // Process power first
        const gangName = this.facName;
        for (const name in AllGangs) {
            if (AllGangs.hasOwnProperty(name)) {
                if (name == gangName) {
                    AllGangs[name].power += this.calculatePower();
                } else {
                    // All NPC gangs get random power gains
                    const gainRoll = Math.random();
                    if (gainRoll < 0.5) {
                        // Multiplicative gain (50% chance)
                        // This is capped per cycle, to prevent it from getting out of control
                        const multiplicativeGain = AllGangs[name].power * 0.005;
                        AllGangs[name].power += Math.min(0.85, multiplicativeGain);
                    } else {
                        // Additive gain (50% chance)
                        const additiveGain = 0.75 * gainRoll * AllGangs[name].territory;
                        AllGangs[name].power += (additiveGain);
                    }
                }
            }
        }

        // Determine if territory should be processed
        if (this.territoryWarfareEngaged) {
            this.territoryClashChance = 1;
        } else if (this.territoryClashChance > 0) {
            // Engagement turned off, but still a positive clash chance. So there's
            // still a chance of clashing but it slowly goes down over time
            this.territoryClashChance = Math.max(0, this.territoryClashChance - 0.01);
        }

        // Then process territory
        for (let i = 0; i < GangConstants.Names.length; ++i) {
            const others = GangConstants.Names.filter((e) => {
                return e !== GangConstants.Names[i];
            });
            const other = getRandomInt(0, others.length - 1);

            const thisGang = GangConstants.Names[i];
            const otherGang = others[other];

            // If either of the gangs involved in this clash is the player, determine
            // whether to skip or process it using the clash chance
            if (thisGang === gangName || otherGang === gangName) {
                if (!(Math.random() < this.territoryClashChance)) { continue; }
            }

            const thisPwr = AllGangs[thisGang].power;
            const otherPwr = AllGangs[otherGang].power;
            const thisChance = thisPwr / (thisPwr + otherPwr);

            function calculateTerritoryGain(winGang: string, loseGang: string): number {
                const powerBonus = Math.max(1, 1+Math.log(AllGangs[winGang].power/AllGangs[loseGang].power)/Math.log(50));
                const gains = Math.min(AllGangs[loseGang].territory, powerBonus*0.0001*(Math.random()+.5))
                return gains;
            }


            if (Math.random() < thisChance) {
                if (AllGangs[otherGang].territory <= 0) {
                    return;
                }
                const territoryGain = calculateTerritoryGain(thisGang, otherGang);
                AllGangs[thisGang].territory += territoryGain;
                AllGangs[otherGang].territory -= territoryGain;
                if (thisGang === gangName) {
                    this.clash(true); // Player won
                    AllGangs[otherGang].power *= (1 / 1.01);
                } else if (otherGang === gangName) {
                    this.clash(false); // Player lost
                } else {
                    AllGangs[otherGang].power *= (1 / 1.01);
                }
            } else {
                if (AllGangs[thisGang].territory <= 0) {
                    return;
                }
                const territoryGain = calculateTerritoryGain(otherGang, thisGang);
                AllGangs[thisGang].territory -= territoryGain;
                AllGangs[otherGang].territory += territoryGain;
                if (thisGang === gangName) {
                    this.clash(false); // Player lost
                } else if (otherGang === gangName) {
                    this.clash(true); // Player won
                    AllGangs[thisGang].power *= (1 / 1.01);
                } else {
                    AllGangs[thisGang].power *= (1 / 1.01);
                }
            }
        }
    }

    processExperienceGains(numCycles = 1): void {
        for (let i = 0; i < this.members.length; ++i) {
            this.members[i].gainExperience(numCycles);
            this.members[i].updateSkillLevels();
        }
    }

    clash(won = false): void {
        // Determine if a gang member should die
        let baseDeathChance = 0.01;
        if (won) { baseDeathChance /= 2; }

        // If the clash was lost, the player loses a small percentage of power
        if (!won) {
            AllGangs[this.facName].power *= (1 / 1.008);
        }

        // Deaths can only occur during X% of clashes
        if (Math.random() < 0.65) { return; }

        for (let i = this.members.length - 1; i >= 0; --i) {
            const member = this.members[i];

            // Only members assigned to Territory Warfare can die
            if (member.task !== "Territory Warfare") { continue; }

            // Chance to die is decreased based on defense
            const modifiedDeathChance = baseDeathChance / Math.pow(member.def, 0.6);
            if (Math.random() < modifiedDeathChance) {
                this.killMember(member);
            }
        }
    }

    canRecruitMember(): boolean {
        if (this.members.length >= GangConstants.MaximumGangMembers) { return false; }
        return (this.respect >= this.getRespectNeededToRecruitMember());
    }

    getRespectNeededToRecruitMember(): number {
        // First N gang members are free (can be recruited at 0 respect)
        const numFreeMembers = 3;
        if (this.members.length < numFreeMembers) { return 0; }

        const i = this.members.length - (numFreeMembers - 1);
        return Math.round(0.9 * Math.pow(i, 3) + Math.pow(i, 2));
    }

    recruitMember(name: string): boolean {
        name = String(name);
        if (name === "" || !this.canRecruitMember()) { return false; }

        // Check for already-existing names
        const sameNames = this.members.filter((m) => {
            return m.name === name;
        });
        if (sameNames.length >= 1) { return false; }

        const member = new GangMember(name);
        this.members.push(member);
        return true;
    }

    // Money and Respect gains multiplied by this number (< 1)
    getWantedPenalty(): number {
        return (this.respect) / (this.respect + this.wanted);
    }


    //Calculates power GAIN, which is added onto the Gang's existing power
    calculatePower(): number {
        let memberTotal = 0;
        for (let i = 0; i < this.members.length; ++i) {
            if (GangMemberTasks.hasOwnProperty(this.members[i].task) && this.members[i].task == "Territory Warfare") {
                const gain = this.members[i].calculatePower();
                memberTotal += gain;
            }
        }
        return (0.015 * this.getTerritory() * memberTotal);
    }


    killMember(member: GangMember): void {
        // Player loses a percentage of total respect, plus whatever respect that member has earned
        const totalRespect = this.respect;
        const lostRespect = (0.05 * totalRespect) + member.earnedRespect;
        this.respect = Math.max(0, totalRespect - lostRespect);

        for (let i = 0; i < this.members.length; ++i) {
            if (member.name === this.members[i].name) {
                this.members.splice(i, 1);
                break;
            }
        }

        // Notify of death
        if (this.notifyMemberDeath) {
            dialogBoxCreate(`${member.name} was killed in a gang clash! You lost ${lostRespect} respect`);
        }

    }

    ascendMember(member: GangMember, workerScript?: WorkerScript): IAscensionResult {
        try {
            const res = member.ascend();
            this.respect = Math.max(1, this.respect - res.respect);
            if (workerScript == null) {
                dialogBoxCreate([`You ascended ${member.name}!`,
                                 "",
                                 `Your gang lost ${numeralWrapper.formatRespect(res.respect)} respect`,
                                 "",
                                 `${member.name} gained the following stat multipliers for ascending:`,
                                 `Hacking: ${numeralWrapper.formatPercentage(res.hack, 3)}`,
                                 `Strength: ${numeralWrapper.formatPercentage(res.str, 3)}`,
                                 `Defense: ${numeralWrapper.formatPercentage(res.def, 3)}`,
                                 `Dexterity: ${numeralWrapper.formatPercentage(res.dex, 3)}`,
                                 `Agility: ${numeralWrapper.formatPercentage(res.agi, 3)}`,
                                 `Charisma: ${numeralWrapper.formatPercentage(res.cha, 3)}`].join("<br>"));
            } else {
                workerScript.log('ascend', `Ascended Gang member ${member.name}`);
            }
            return res;
        } catch(e) {
            if (workerScript == null) {
                exceptionAlert(e);
            }
            throw e; // Re-throw, will be caught in the Netscript Function
        }
    }

    // Cost of upgrade gets cheaper as gang increases in respect + power
    getDiscount(): number {
        const power = this.getPower();
        const respect = this.respect;

        const respectLinearFac = 5e6;
        const powerLinearFac = 1e6;
        const discount = Math.pow(respect, 0.01) + respect / respectLinearFac + Math.pow(power, 0.01) + power / powerLinearFac - 1;
        return Math.max(1, discount);
    }

    // Returns only valid tasks for this gang. Excludes 'Unassigned'
    getAllTaskNames(): string[] {
        let tasks = [];
        const allTasks = Object.keys(GangMemberTasks);
        if (this.isHackingGang) {
            tasks = allTasks.filter((e) => {
                const task = GangMemberTasks[e];
                if (task == null) { return false; }
                if (e === "Unassigned") { return false; }
                return task.isHacking;
            });
        } else {
            tasks = allTasks.filter((e) => {
                const task = GangMemberTasks[e];
                if (task == null) { return false; }
                if (e === "Unassigned") { return false; }
                return task.isCombat;
            });
        }
        return tasks;
    }

    getUpgradeCost(upg: GangMemberUpgrade): number {
        if (upg == null) { return Infinity; }
        return upg.cost/this.getDiscount();
    }

    /**
     * Serialize the current object to a JSON save state.
     */
    toJSON(): any {
        return Generic_toJSON("Gang", this);
    }

    /**
     * Initiatizes a Gang object from a JSON save state.
     */
    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
    static fromJSON(value: any): Gang {
        return Generic_fromJSON(Gang, value.data);
    }

}

Reviver.constructors.Gang = Gang;