emilepharand/Babilonia

import type {Idea} from '../../../server/model/ideas/idea';
import {getExpressionForAddingFromExpression} from '../../../server/model/ideas/expression';
import type {Ref} from 'vue';
import {validateContextParentheses} from '../../../server/model/inputValidator';

export const numberRowsIncrement = 5;

export function validateIdeaForm(idea: Ref<Idea>, errorText: Ref<string>) {
    // Remove empty expressions
    const expressions = idea.value.ee.filter(e => e.text.trim() !== '');
    // Not possible to save empty idea
    if (expressions.length === 0) {
        errorText.value = 'Empty idea.';
        return null;
    }
    const expressionsForAdding = expressions.map(e => getExpressionForAddingFromExpression(e));
    const ideaForAdding = {ee: expressionsForAdding};
    // Identical expressions
    const distinctExpressions = new Set<string>();
    ideaForAdding.ee.forEach(e => distinctExpressions.add(JSON.stringify(e)));
    if (distinctExpressions.size !== ideaForAdding.ee.length) {
        errorText.value = 'Some expressions are identical.';
        return null;
    }
    if (!validateContextParentheses((ideaForAdding.ee))) {
        errorText.value = 'Invalid context parentheses.';
        return null;
    }
    errorText.value = '';
    return ideaForAdding;
}