package one.oth3r.sit.file;

import com.google.gson.annotations.SerializedName;
import net.minecraft.block.BlockState;
import net.minecraft.registry.Registries;
import net.minecraft.registry.tag.TagKey;
import net.minecraft.util.Identifier;
import one.oth3r.sit.utl.Utl;

import java.util.ArrayList;

public class CustomBlock {

    @SerializedName("block-ids")
    private ArrayList<String> blockIds = new ArrayList<>();
    @SerializedName("block-tags")
    private ArrayList<String> blockTags = new ArrayList<>();
    @SerializedName("blockstates")
    private ArrayList<String> blockStates = new ArrayList<>();
    @SerializedName("sittingHeight")
    private Double sittingHeight = 0.5;

    public CustomBlock() {}

    public CustomBlock(ArrayList<String> blockIds, ArrayList<String> blockTags, ArrayList<String> blockStates, Double sittingHeight) {
        this.blockIds = blockIds;
        this.blockTags = blockTags;
        this.blockStates = blockStates;
        this.sittingHeight = sittingHeight;
    }

    public ArrayList<String> getBlockIds() {
        return blockIds;
    }

    public ArrayList<String> getBlockTags() {
        return blockTags;
    }

    public ArrayList<String> getBlockStates() {
        return blockStates;
    }

    public Double getSittingHeight() {
        return sittingHeight;
    }

    /**
     * checks if the blockstate matches the CustomBlock params
     * @param blockState the blockState to check
     * @return if the blockstate is allowed by the CustomBlock rules
     */
    public boolean isValid(BlockState blockState) {
        boolean blockType = checkBlockType(blockState);
        if (!blockType) return false;

        // now check if the state is one of the acceptable states
        for (String state : blockStates) {
            // if there is a NOT (!) blockstate, and it is contained in the block, return false
            if (state.startsWith("!") && blockState.toString().contains(state.substring(1))) return false;
            // else check if the blockstate matches, if not return false
            else if (!blockState.toString().contains(state)) return false;
        }

        // if here, all passes have passed
        return true;
    }

    /**
     * returns if the block is the correct type or not
     * @param blockState the blockstate to check
     * @return if the type of block is matching the CustomBlock rules (e.g. if it is wood, ect.)
     */
    private boolean checkBlockType(BlockState blockState) {
        // for all the entered blocks
        for (String id : blockIds) {
            // if there is a match for the NOT(!) blocks, return false immediately
            if (id.startsWith("!") && id.substring(1).equals(Utl.getBlockID(blockState))) return false;
            // if there is a match for the block, return true immediately
            if (id.equalsIgnoreCase(Utl.getBlockID(blockState))) return true;
        }
        // for all the entered tags
        for (String tag : blockTags) {
            // substring to remove # and if needed, !
            // if there is a math for the NOT(!) tag, return false
            if (tag.startsWith("!") && blockState.isIn(TagKey.of(Registries.BLOCK.getKey(), Identifier.of(tag.substring(2))))) return false;
            // if there is a match, return true
            if (blockState.isIn(TagKey.of(Registries.BLOCK.getKey(), Identifier.of(tag.substring(1))))) return true;
        }
        return false;
    }
}