package com.thebrokenrail.sorcerycraft.command;

import com.mojang.brigadier.StringReader;
import com.mojang.brigadier.arguments.ArgumentType;
import com.mojang.brigadier.context.CommandContext;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.DynamicCommandExceptionType;
import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;

import com.mojang.brigadier.suggestion.Suggestions;
import com.mojang.brigadier.suggestion.SuggestionsBuilder;
import com.thebrokenrail.sorcerycraft.SorceryCraft;
import com.thebrokenrail.sorcerycraft.spell.api.Spell;
import com.thebrokenrail.sorcerycraft.spell.api.registry.SpellRegistry;
import net.minecraft.command.CommandSource;
import net.minecraft.server.command.ServerCommandSource;
import net.minecraft.text.TranslatableText;
import net.minecraft.util.Identifier;

public class SpellArgumentType implements ArgumentType<Identifier> {
    private static final Collection<String> EXAMPLES = Arrays.asList("sorcerycraft:heal_spell", "sorcerycraft:damage_spell");
    public static final DynamicCommandExceptionType NOT_FOUND_EXCEPTION = new DynamicCommandExceptionType((object) -> new TranslatableText("command." + SorceryCraft.NAMESPACE + ".spell.unknown_spell", object));

    public SpellArgumentType() {
    }

    public static SpellArgumentType spell() {
        return new SpellArgumentType();
    }

    public static Identifier getSpell(CommandContext<ServerCommandSource> context, String name) throws CommandSyntaxException {
        return validate(context.getArgument(name, Identifier.class));
    }

    private static Identifier validate(Identifier identifier) throws CommandSyntaxException {
        Spell testSpell = SpellRegistry.getSpell(identifier, 0);
        if (testSpell == null) {
            throw NOT_FOUND_EXCEPTION.create(identifier);
        }
        return identifier;
    }

    @Override
    public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> context, SuggestionsBuilder builder) {
        return CommandSource.suggestIdentifiers(Arrays.asList(SpellRegistry.getSpellsID()), builder);
    }

    public Identifier parse(StringReader stringReader) throws CommandSyntaxException {
        return validate(Identifier.fromCommandInput(stringReader));
    }

    public Collection<String> getExamples() {
        return EXAMPLES;
    }
}