File size: 4,203 Bytes
450b0f4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | import { BadRequestException } from '@nestjs/common';
const SUPPORTED_COMPONENT_TYPES = new Set([
'dialogue',
'media',
'markdown',
'target_matching',
'category_sorting',
'mindmap_reveal',
'mcq',
'matching_columns',
'true_false',
'sequence_sorting',
'final_summary',
]);
function requireArray(value: any, label: string) {
if (!Array.isArray(value)) {
throw new BadRequestException(`${label} must be an array`);
}
}
function requireString(value: any, label: string) {
if (typeof value !== 'string' || value.trim() === '') {
throw new BadRequestException(`${label} must be a non-empty string`);
}
}
function requireObject(value: any, label: string) {
if (!value || typeof value !== 'object' || Array.isArray(value)) {
throw new BadRequestException(`${label} must be a JSON object`);
}
}
export class NodeSchemaValidator {
static validateLessonFlow(data: any) {
requireArray(data, 'lessonFlow');
const ids = new Set<string>();
data.forEach((component: any, idx: number) => {
requireObject(component, `lessonFlow[${idx}]`);
requireString(component.id, `lessonFlow[${idx}].id`);
requireString(component.type, `lessonFlow[${idx}].type`);
if (ids.has(component.id)) {
throw new BadRequestException(`lessonFlow[${idx}].id duplicates "${component.id}"`);
}
ids.add(component.id);
if (!SUPPORTED_COMPONENT_TYPES.has(component.type)) {
throw new BadRequestException(`lessonFlow[${idx}].type "${component.type}" is not supported`);
}
requireObject(component.config, `lessonFlow[${idx}].config`);
this.validateComponentConfig(component, idx);
if (component.completionRule) {
requireObject(component.completionRule, `lessonFlow[${idx}].completionRule`);
requireString(component.completionRule.type, `lessonFlow[${idx}].completionRule.type`);
}
});
}
private static validateComponentConfig(component: any, idx: number) {
const config = component.config;
const label = `lessonFlow[${idx}].config`;
if (component.type === 'dialogue') {
requireArray(config.lines, `${label}.lines`);
config.lines.forEach((line: any, lineIdx: number) => {
requireString(line.text, `${label}.lines[${lineIdx}].text`);
});
}
if (component.type === 'media') {
requireString(config.url, `${label}.url`);
}
if (component.type === 'markdown') {
requireString(config.content, `${label}.content`);
}
if (component.type === 'target_matching') {
requireArray(config.targets, `${label}.targets`);
requireArray(config.items, `${label}.items`);
}
if (component.type === 'category_sorting') {
requireArray(config.categories, `${label}.categories`);
requireArray(config.cards, `${label}.cards`);
}
if (component.type === 'mindmap_reveal') {
requireArray(config.nodes, `${label}.nodes`);
}
if (component.type === 'mcq') {
requireString(config.question, `${label}.question`);
requireArray(config.options, `${label}.options`);
if (!config.options.some((option: any) => option.isCorrect === true || option.correct === true)) {
throw new BadRequestException(`${label}.options must contain at least one correct option`);
}
}
if (component.type === 'matching_columns') {
requireArray(config.leftColumn, `${label}.leftColumn`);
requireArray(config.rightColumn, `${label}.rightColumn`);
requireArray(config.correctPairs, `${label}.correctPairs`);
}
if (component.type === 'true_false') {
requireString(config.statement, `${label}.statement`);
if (typeof config.correctAnswer !== 'boolean') {
throw new BadRequestException(`${label}.correctAnswer must be a boolean`);
}
}
if (component.type === 'sequence_sorting') {
requireArray(config.items, `${label}.items`);
}
if (component.type === 'final_summary') {
if (config.keyTakeaways !== undefined) {
requireArray(config.keyTakeaways, `${label}.keyTakeaways`);
}
}
}
static validateNode(lessonFlow: any) {
this.validateLessonFlow(lessonFlow);
}
}
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