import {DiagramEntity, DiagramEntityType, DiagramTemplates} from "../../diagram/types/diagramEntity";
import {
    COLOR_NAME_TO_HEX,
    ConnectEntitiesParams,
    CreateEntityParams,
    ModifyEntityParams,
    RemoveEntityParams,
    SHAPE_TO_TEMPLATE,
    ToolResult
} from "../types/chatTypes";
import {v4 as uuidv4} from 'uuid';

function resolveColor(color?: string): string {
    if (!color) return '#0000ff';
    const lower = color.toLowerCase();
    if (COLOR_NAME_TO_HEX[lower]) {
        return COLOR_NAME_TO_HEX[lower];
    }
    if (color.startsWith('#')) {
        return color;
    }
    return '#0000ff';
}

export function createEntity(params: CreateEntityParams): ToolResult {
    const id = 'id' + uuidv4();
    const template = SHAPE_TO_TEMPLATE[params.shape];
    const color = resolveColor(params.color);
    const position = params.position || {x: 0, y: 1.5, z: 2};

    const entity: DiagramEntity = {
        id,
        template,
        type: DiagramEntityType.ENTITY,
        color,
        text: params.label || '',
        position,
        rotation: {x: 0, y: Math.PI, z: 0},
        scale: {x: 0.1, y: 0.1, z: 0.1},
    };

    const event = new CustomEvent('chatCreateEntity', {
        detail: {entity},
        bubbles: true
    });
    document.dispatchEvent(event);

    return {
        toolName: 'create_entity',
        success: true,
        message: `Created ${params.shape}${params.label ? ` labeled "${params.label}"` : ''} at position (${position.x.toFixed(1)}, ${position.y.toFixed(1)}, ${position.z.toFixed(1)})`,
        entityId: id
    };
}

export function connectEntities(params: ConnectEntitiesParams): ToolResult {
    const id = 'id' + uuidv4();
    const color = resolveColor(params.color);

    const entity: DiagramEntity = {
        id,
        template: DiagramTemplates.CONNECTION,
        type: DiagramEntityType.ENTITY,
        color,
        from: params.from,
        to: params.to,
    };

    const event = new CustomEvent('chatCreateEntity', {
        detail: {entity},
        bubbles: true
    });
    document.dispatchEvent(event);

    return {
        toolName: 'connect_entities',
        success: true,
        message: `Connected "${params.from}" to "${params.to}"`,
        entityId: id
    };
}

export function removeEntity(params: RemoveEntityParams): ToolResult {
    const event = new CustomEvent('chatRemoveEntity', {
        detail: {target: params.target},
        bubbles: true
    });
    document.dispatchEvent(event);

    return {
        toolName: 'remove_entity',
        success: true,
        message: `Removed entity "${params.target}"`
    };
}

export function modifyEntity(params: ModifyEntityParams): ToolResult {
    const updates: Partial<DiagramEntity> = {};

    if (params.color) {
        updates.color = resolveColor(params.color);
    }
    if (params.label !== undefined) {
        updates.text = params.label;
    }
    if (params.position) {
        updates.position = params.position;
    }

    const event = new CustomEvent('chatModifyEntity', {
        detail: {target: params.target, updates},
        bubbles: true
    });
    document.dispatchEvent(event);

    return {
        toolName: 'modify_entity',
        success: true,
        message: `Modified entity "${params.target}"`
    };
}

export function listEntities(): Promise<ToolResult> {
    return new Promise((resolve) => {
        const responseHandler = (e: CustomEvent) => {
            document.removeEventListener('chatListEntitiesResponse', responseHandler as EventListener);
            const entities = e.detail.entities as Array<{
                id: string;
                template: string;
                text: string;
                position: { x: number; y: number; z: number }
            }>;

            if (entities.length === 0) {
                resolve({
                    toolName: 'list_entities',
                    success: true,
                    message: 'The diagram is empty.'
                });
                return;
            }

            const list = entities.map(e => {
                const shape = e.template.replace('#', '').replace('-template', '');
                return `- ${e.text || '(no label)'} (${shape}) at (${e.position?.x?.toFixed(1) || 0}, ${e.position?.y?.toFixed(1) || 0}, ${e.position?.z?.toFixed(1) || 0}) [id: ${e.id}]`;
            }).join('\n');

            resolve({
                toolName: 'list_entities',
                success: true,
                message: `Current entities in the diagram:\n${list}`
            });
        };

        document.addEventListener('chatListEntitiesResponse', responseHandler as EventListener);

        const event = new CustomEvent('chatListEntities', {bubbles: true});
        document.dispatchEvent(event);

        setTimeout(() => {
            document.removeEventListener('chatListEntitiesResponse', responseHandler as EventListener);
            resolve({
                toolName: 'list_entities',
                success: false,
                message: 'Failed to list entities (timeout)'
            });
        }, 5000);
    });
}