// Base filesystem class that defines the common interface for all filesystem implementations

import { parseHex, validateInput, checkDependencies, updateResultItem } from '../utils.js';

export class BaseFilesystem {
    constructor(name, variants = []) {
        this.name = name;
        this.variants = variants; // Array of variant configurations
    }

    // Abstract method to be implemented by subclasses
    getVariants() {
        return this.variants;
    }

    // Generate HTML for constants section
    generateConstantsHTML(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return '';

        return `
            <div class="section constants">
                <h2>Konstanten</h2>
                <div class="input-grid">
                    ${variant.constants.map(constant => `
                        <div class="input-group">
                            <label for="${constant.id}">${constant.label} <span class="unit-indicator">(${constant.unit})</span>:</label>
                            <input type="text" id="${constant.id}" value="${constant.default}" placeholder="${constant.default}">
                            <div class="error-message" id="${constant.id}-error"></div>
                        </div>
                    `).join('')}
                </div>
            </div>
        `;
    }

    // Generate HTML for input parameters section
    generateInputsHTML(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return '';

        return `
            <div class="section">
                <h2>Eingabeparameter</h2>
                <div class="input-grid">
                    ${variant.inputs.map(input => `
                        <div class="input-group">
                            <label for="${input.id}">${input.label} <span class="unit-indicator">(${input.unit})</span>:</label>
                            <input type="text" id="${input.id}" placeholder="${input.placeholder}">
                            <div class="error-message" id="${input.id}-error"></div>
                        </div>
                    `).join('')}
                </div>
            </div>
        `;
    }

    // Generate HTML for results section
    generateResultsHTML(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return '';

        return `
            <div class="section results">
                <h2>Berechnete Werte</h2>
                ${variant.resultGroups.map(group => `
                    <div class="result-group">
                        <h3>${group.name}</h3>
                        ${group.results.map(result => `
                            <div class="result-item" data-deps="${result.dependencies.join(',')}">
                                <span class="result-label" data-formula="${result.formula}">${result.label}:</span>
                                <div class="result-value-container">
                                    <span class="result-value" id="${result.id}">-</span>
                                    <button class="copy-btn" onclick="copyToClipboard('${result.id}')">📋</button>
                                </div>
                            </div>
                        `).join('')}
                    </div>
                `).join('')}
            </div>
        `;
    }

    // Generate HTML for formulas section
    generateFormulasHTML(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return '';

        return `
            <div class="section formulas">
                <h2>Berechnungsformeln ${this.name}</h2>
                <div class="formula-box">
                    ${variant.formulas.map(formula => `
                        <div class="formula"><span class="calculated">${formula.name}</span> = ${formula.expression}</div>
                    `).join('')}
                </div>
            </div>
        `;
    }

    // Generate complete tab content HTML
    generateTabContentHTML(variantId, calculatorHTML) {
        return `
            <div class="tab-content" id="${variantId}">
                <div class="constants-calculator-container">
                    ${this.generateConstantsHTML(variantId)}
                    <div class="section hex-calculator">
                        <h2>Hex-Rechner</h2>
                        ${calculatorHTML}
                    </div>
                </div>
                ${this.generateInputsHTML(variantId)}
                ${this.generateResultsHTML(variantId)}
                ${this.generateFormulasHTML(variantId)}
            </div>
        `;
    }

    // Abstract method for calculations - to be implemented by subclasses
    calculate(variantId) {
        throw new Error('calculate method must be implemented by subclass');
    }

    // Setup input event listeners for this filesystem
    setupInputListeners(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return;

        const allInputIds = [
            ...variant.constants.map(c => c.id),
            ...variant.inputs.map(i => i.id)
        ];

        allInputIds.forEach(inputId => {
            const input = document.getElementById(inputId);
            if (input) {
                input.addEventListener('input', () => {
                    validateInput(inputId, input.value);
                    this.calculate(variantId);
                });
            }
        });
    }

    // Get all input values for a variant
    getInputValues(variantId) {
        const variant = this.variants.find(v => v.id === variantId);
        if (!variant) return {};

        const values = {};
        
        // Get constants
        variant.constants.forEach(constant => {
            const element = document.getElementById(constant.id);
            if (element) {
                values[constant.id] = parseHex(element.value) || 0;
            }
        });

        // Get inputs
        variant.inputs.forEach(input => {
            const element = document.getElementById(input.id);
            if (element) {
                values[input.id] = parseHex(element.value);
            }
        });

        return values;
    }
}