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//      Magicbane Emulator Project © 2013 - 2026
//                https://www.magicbane.com

package engine.parsers.wpak;

import engine.mbEnums;
import engine.parsers.objects.wpak.PowerActionTemplate;
import org.pmw.tinylog.Logger;

import java.util.ArrayList;
import java.util.HashMap;

// Loads PowerActions.cfg (client loader PowerActions_LoadCfg 0x578EC0).

public class PowerActionParser {

    private static final String fileName = "PowerActions.cfg";

    public static HashMap<String, PowerActionTemplate> parsePowerActionsFile() {

        HashMap<String, PowerActionTemplate> powerActions = new HashMap<>();
        WpakBlock root;
        PowerActionTemplate powerAction;
        int blockCount = 0;
        int failedCount = 0;

        try {
            root = WpakFileReader.readBlocks(fileName);
        } catch (Exception e) {
            Logger.error(fileName + ": " + e.getMessage());
            return null;
        }

        for (WpakLine line : root.lines()) {
            Logger.error(line.location() + ": line outside POWERACTIONBEGIN/END");
            failedCount++;
        }

        for (WpakBlock block : root.blocks()) {
            try {
                if (!block.name.equals("POWERACTION"))
                    throw block.beginLine.error("unexpected " + block.name + "BEGIN");

                blockCount++;
                powerAction = parsePowerActionBlock(block);

                // The client's map assigns on insert, so a repeated id keeps the later entry
                if (powerActions.containsKey(powerAction.action_id))
                    Logger.warn(block.location() + ": duplicate power action " + powerAction.action_id + "; the later entry wins");

                powerActions.put(powerAction.action_id, powerAction);
            } catch (WpakFormatException e) {
                Logger.error(e.getMessage());
                failedCount++;
            } catch (Exception e) {
                Logger.error(block.location() + ": " + e);
                failedCount++;
            }
        }

        Logger.info("Loaded " + powerActions.size() + " of " + blockCount + " power actions");

        if (failedCount > 0)
            return null;

        return powerActions;
    }

    private static PowerActionTemplate parsePowerActionBlock(WpakBlock block) {

        PowerActionTemplate powerAction = new PowerActionTemplate();
        ArrayList<WpakLine> lines = block.lines();
        WpakLine header;

        if (!block.blocks().isEmpty())
            throw block.blocks().get(0).beginLine.error("nested block in a power action");

        if (lines.isEmpty())
            throw block.beginLine.error("empty power action");

        header = lines.get(0);
        powerAction.action_id = header.token(0);
        powerAction.action_type = header.enumToken(mbEnums.PowerActionType.class, 1);
        powerAction.header_args.addAll(header.tokens.subList(2, header.size()));

        parseHeader(powerAction, header);

        for (int i = 1; i < lines.size(); i++)
            parseKey(powerAction, lines.get(i));

        return powerAction;
    }

    // Layouts from the ArcPowerAction*_ParseHeader functions; args start at token 2

    private static void parseHeader(PowerActionTemplate powerAction, WpakLine header) {

        switch (powerAction.action_type) {
            case ApplyEffect:
            case Block:
            case Charm:
            case DirectDamage:
            case Invis:
            case SpireDisable:
                powerAction.effect_ids.add(header.token(2));
                powerAction.isaggressive = header.optionalIntToken(3) != 0;
                break;
            case ApplyEffects:
                powerAction.isaggressive = header.intToken(2) != 0;
                for (int i = 3; i < header.size(); i++)
                    powerAction.effect_ids.add(header.token(i));
                break;
            case DeferredPower:
                powerAction.effect_ids.add(header.token(2));
                powerAction.isaggressive = header.intToken(3) != 0;
                powerAction.deferred_power_id = header.token(4);
                break;
            case DamageOverTime:
                powerAction.effect_ids.add(header.token(2));
                powerAction.num_iterations = header.intToken(3);
                powerAction.isaggressive = header.optionalIntToken(4) != 0;
                break;
            case CreateMob:
                powerAction.mob_id = header.intToken(2);
                powerAction.mob_level = header.intToken(3);
                break;
            case RemoveEffect:
                powerAction.effect_source_to_remove = header.token(2);
                break;
            case SetItemFlag:
                powerAction.item_flag = header.enumToken(mbEnums.ItemFlags.class, 2);
                powerAction.item_flag_value = header.optionalBoolToken(3);
                break;
            case Track:
                powerAction.effect_ids.add(header.token(2));
                powerAction.track_filter = header.token(5);
                powerAction.max_track = header.intToken(7);
                break;
            case Transform:
                powerAction.effect_ids.add(header.token(2));
                break;
            case TransferStat:
                parseTransferStat(powerAction, header);
                break;
            case TransferStatOT:
                parseTransferStat(powerAction, header);
                powerAction.effect_ids.add(header.token(10));
                powerAction.num_iterations = header.intToken(11);
                break;
            default:
                break;
        }
    }

    private static void parseTransferStat(PowerActionTemplate powerAction, WpakLine header) {

        powerAction.transfer_from_type = header.enumToken(mbEnums.CostType.class, 2);
        powerAction.transfer_to_type = header.enumToken(mbEnums.CostType.class, 3);
        powerAction.transfer_amount = header.floatToken(4);
        powerAction.transfer_amount_curve = header.token(5);
        powerAction.transfer_efficiency = header.floatToken(6);
        powerAction.transfer_efficiency_curve = header.token(7);
        powerAction.isaggressive = header.optionalIntToken(9) != 0;
    }

    // Shared keys from ArcPowerAction_ParseKey 0x579820; the rest are per action type.
    // The client logs an unknown key and goes on; here it fails the load so no data is dropped silently.

    private static void parseKey(PowerActionTemplate powerAction, WpakLine line) {

        switch (line.token(0)) {
            case "ISAGGRESSIVE=":
                powerAction.isaggressive = line.optionalBoolToken(1);
                break;
            case "BLADETRAILS=":
                powerAction.bladetrails = line.optionalBoolToken(1);
                break;
            case "ISRESISTABLE=":
                powerAction.isresistable = line.optionalBoolToken(1);
                break;
            case "APPLYEFFECTSELF=":
                powerAction.applyeffectself = line.token(1);
                break;
            case "APPLYEFFECTOTHER=":
                powerAction.applyeffectother = line.token(1);
                break;
            case "WEAROFFEFFECTSELF=":
                powerAction.wearoffeffectself = line.token(1);
                break;
            case "WEAROFFEFFECTOTHER=":
                powerAction.wearoffeffectother = line.token(1);
                break;
            case "APPLYEFFECTBLANK=":
                powerAction.applyeffectblank = line.optionalBoolToken(1);
                break;
            case "WEAROFFEFFECTBLANK=":
                powerAction.wearoffeffectblank = line.optionalBoolToken(1);
                break;
            case "IS_AVAILABLE_FOR_FORMULAE=":
                powerAction.is_available_for_formulae = line.optionalBoolToken(1);
                break;
            case "REMOVEALL=":
                powerAction.removeall = line.optionalBoolToken(1);
                break;
            case "BODYPARTS=":
                powerAction.bodyparts.addAll(line.intTokensFrom(1));
                break;
            case "FEMALEBODYPARTS=":
                powerAction.femalebodyparts.addAll(line.intTokensFrom(1));
                break;
            case "SHOULDSHOWWEAPONS=":
                powerAction.shouldshowweapons = line.optionalBoolToken(1);
                break;
            case "SHOULDSHOWARMOR=":
                powerAction.shouldshowarmor = line.optionalBoolToken(1);
                break;
            case "ATTACKANIMS=":
                powerAction.attackanims.addAll(line.intTokensFrom(1));
                break;
            case "SCALEFACTOR=":
                powerAction.scalefactor = new float[]{line.floatToken(1), line.floatToken(2), line.floatToken(3)};
                break;
            case "EFFECTID=":
                powerAction.effectid = line.token(1);
                break;
            case "LEVELCAP=":
                powerAction.levelcap = line.intToken(1);
                powerAction.levelcap_curve = line.has(2) ? line.token(2) : null;
                break;
            case "CLEARAGGRO=":
                powerAction.clearaggro = line.optionalBoolToken(1);
                break;
            case "TARGETBECOMESPET=":
                powerAction.targetbecomespet = line.optionalBoolToken(1);
                break;
            case "DESTROYOLDPET=":
                powerAction.destroyoldpet = line.optionalBoolToken(1);
                break;
            case "ROOTFSMID=":
                powerAction.rootfsmid = line.token(1);
                break;
            case "DAMAGETYPE=":
                powerAction.damagetype = line.enumToken(mbEnums.DamageType.class, 1);
                break;
            case "SPLASHDAMAGE=":
                powerAction.splashdamage.addAll(line.intTokensFrom(1));
                break;
            default:
                throw line.error("unknown power action key " + line.token(0));
        }
    }
}