/**
 * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */
/**
 * Copyright (C) 2022, Protein Bioinformatics Research Group, RCNS
 *
 * Licensed under CC BY-NC 4.0, see LICENSE file for more info.
 *
 * @author Gabor Tusnady <tusnady.gabor@ttk.hu>
 * @author Csongor Gerdan <gerdan.csongor@ttk.hu>
 */

import { ParamDefinition as PD } from 'molstar/lib/mol-util/param-definition';
import { Structure, StructureProperties, Unit } from 'molstar/lib/mol-model/structure';
import { CustomPropertyDescriptor } from 'molstar/lib/mol-model/custom-property';
import { isInMembranePlane, TMDETParams } from './algorithm';
import { CustomStructureProperty } from 'molstar/lib/mol-model-props/common/custom-structure-property';
import { CustomProperty } from 'molstar/lib/mol-model-props/common/custom-property';
import { Vec3 } from 'molstar/lib/mol-math/linear-algebra';
import { QuerySymbolRuntime } from 'molstar/lib/mol-script/runtime/query/base';
import { CustomPropSymbol } from 'molstar/lib/mol-script/language/symbol';
import { Type } from 'molstar/lib/mol-script/language/type';
import { membraneOrientation } from './behavior';
import { ChainList, PDBTMDescriptor } from './types';

export const MembraneOrientationParams = {
    ...TMDETParams
};
export type MembraneOrientationParams = typeof MembraneOrientationParams
export type MembraneOrientationProps = PD.Values<MembraneOrientationParams>

export { MembraneOrientation };

/**
 * Simple storage to made PDBTM descriptor available globally.
 *
 * @author Csongor Gerdan <gerdan.csongor@ttk.hu>
 */
class DescriptorCache {
    private map: Map<string, PDBTMDescriptor>;

    constructor() {
        this.map = new Map<string, PDBTMDescriptor>();
    }

    add(descriptor: PDBTMDescriptor) {
        const key = descriptor.pdb_id.toLowerCase();
        if (!this.map.has(key)) {
            this.map.set(key, descriptor);
        }
    }

    get(key: string) {
        key = key.toLowerCase();
        return this.map.get(key);
    }

}
export const TmDetDescriptorCache = new DescriptorCache();

class ChainListCache {
    private map: Map<string, ChainList>;

    constructor() {
        this.map = new Map<string, ChainList>();
    }

    set(key: string, chains: ChainList) {
        key = key.toLowerCase();
        if (!this.map.has(key)) {
            this.map.set(key, chains);
        }
    }

    get(key: string) {
        key = key.toLowerCase();
        return this.map.get(key);
    }
}
export const TmDetChainListCache = new ChainListCache();

interface MembraneOrientation {
    // point in membrane boundary
    readonly planePoint1: Vec3,
    // point in opposite side of membrane boundary
    readonly planePoint2: Vec3,
    // normal vector of membrane layer
    readonly normalVector: Vec3,
    // the radius of the membrane layer
    readonly radius: number,
    readonly centroid: Vec3
}

namespace MembraneOrientation {
    export enum Tag {
        Representation = 'membrane-orientation-3d'
    }

    const pos = Vec3();
    export const symbols = {
        isTransmembrane: QuerySymbolRuntime.Dynamic(CustomPropSymbol('computed', 'membrane-orientation.is-transmembrane', Type.Bool),
            ctx => {
                const { unit, structure } = ctx.element;
                const { x, y, z } = StructureProperties.atom;
                if (!Unit.isAtomic(unit)) return 0;
                const membraneOrientation = MembraneOrientationProvider.get(structure).value;
                if (!membraneOrientation) return 0;
                Vec3.set(pos, x(ctx.element), y(ctx.element), z(ctx.element));
                const { normalVector, planePoint1, planePoint2 } = membraneOrientation;
                return isInMembranePlane(pos, normalVector, planePoint1, planePoint2);
            })
    };
}

export const MembraneOrientationProvider: CustomStructureProperty.Provider<MembraneOrientationParams, MembraneOrientation> = CustomStructureProperty.createProvider({
    label: 'TMDET Membrane Orientation Provider',
    descriptor: CustomPropertyDescriptor({
        name: 'tmdet_computed_membrane_orientation',
        symbols: MembraneOrientation.symbols,
        // TODO `cifExport`
    }),
    type: 'root',
    defaultParams: MembraneOrientationParams,
//    getParams: (data: Structure) => MembraneOrientationParams,
    getParams: function(data: Structure) {
        //DebugUtil.log('getParams:: DEBUG', MembraneOrientationParams);
        return MembraneOrientationParams;
    },
    isApplicable: (data: Structure) => true,
    obtain: async (ctx: CustomProperty.Context, data: Structure, props: Partial<MembraneOrientationProps>) => {
        //DebugUtil.log('obtain:: DEBUG', data.customPropertyDescriptors);
        let result = membraneOrientation;
        //DebugUtil.log("RESULT of 'obtain:'", result);
        return { value: result };
    }
});