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| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 | /** * Session Converter * * Converts parsed worksheet data into SlotResults that can be * used to create an offline practice session. */ import type { SlotResult, GeneratedProblem } from '@/db/schema/session-plans' import type { WorksheetParsingResult, ParsedProblem } from './schemas' import { analyzeRequiredSkills } from '@/utils/problemGenerator' /** * Options for session conversion */ export interface ConversionOptions { /** Part number to assign to all problems (default: 1) */ partNumber?: 1 | 2 | 3 /** Source identifier for the session results */ source?: 'practice' | 'recency-refresh' } /** * Result of session conversion */ export interface ConversionResult { /** Converted slot results ready for session creation */ slotResults: Omit<SlotResult, 'timestamp'>[] /** Summary statistics */ summary: { totalProblems: number answeredProblems: number correctAnswers: number incorrectAnswers: number skippedProblems: number accuracy: number | null } /** Skills that were exercised across all problems */ skillsExercised: string[] } /** * Convert a single parsed problem to a GeneratedProblem */ function toGeneratedProblem(parsed: ParsedProblem): GeneratedProblem { // Calculate correct answer from terms const correctAnswer = parsed.terms.reduce((sum, term) => sum + term, 0) // Infer skills from terms const skillsRequired = analyzeRequiredSkills(parsed.terms, correctAnswer) return { terms: parsed.terms, answer: correctAnswer, skillsRequired, } } /** * Convert a parsed problem to a SlotResult */ function toSlotResult( parsed: ParsedProblem, slotIndex: number, options: ConversionOptions ): Omit<SlotResult, 'timestamp'> { const problem = toGeneratedProblem(parsed) const studentAnswer = parsed.studentAnswer ?? 0 const isCorrect = parsed.studentAnswer !== null && parsed.studentAnswer === problem.answer return { slotId: crypto.randomUUID(), partNumber: options.partNumber ?? 1, slotIndex, problem, studentAnswer, isCorrect, responseTimeMs: 0, // Unknown for offline work skillsExercised: problem.skillsRequired, usedOnScreenAbacus: false, hadHelp: false, incorrectAttempts: isCorrect ? 0 : parsed.studentAnswer !== null ? 1 : 0, source: options.source, } } /** * Convert parsed worksheet results to SlotResults * * Filters out problems that were marked for exclusion and converts * the remaining problems into the format needed for session creation. * * @param parsingResult - The parsed worksheet data * @param options - Conversion options * @returns Conversion result with slot results and summary * * @example * ```typescript * import { convertToSlotResults } from '@/lib/worksheet-parsing' * * const result = convertToSlotResults(parsingResult, { partNumber: 1 }) * * // Create session with results * await createSession({ * playerId, * status: 'completed', * slotResults: result.slotResults, * }) * ``` */ export function convertToSlotResults( parsingResult: WorksheetParsingResult, options: ConversionOptions = {} ): ConversionResult { const problems = parsingResult.problems const slotResults: Omit<SlotResult, 'timestamp'>[] = [] const allSkills = new Set<string>() let answeredCount = 0 let correctCount = 0 for (let i = 0; i < problems.length; i++) { const parsed = problems[i] const slotResult = toSlotResult(parsed, i, options) slotResults.push(slotResult) // Track skills for (const skill of slotResult.skillsExercised) { allSkills.add(skill) } // Track statistics if (parsed.studentAnswer !== null) { answeredCount++ if (slotResult.isCorrect) { correctCount++ } } } const skippedCount = problems.length - answeredCount return { slotResults, summary: { totalProblems: problems.length, answeredProblems: answeredCount, correctAnswers: correctCount, incorrectAnswers: answeredCount - correctCount, skippedProblems: skippedCount, accuracy: answeredCount > 0 ? correctCount / answeredCount : null, }, skillsExercised: Array.from(allSkills), } } /** * Validate that parsed problems have reasonable values * * Returns warnings for any issues found. */ export function validateParsedProblems(problems: ParsedProblem[]): { valid: boolean warnings: string[] } { const warnings: string[] = [] for (const problem of problems) { // Check that correct answer matches term sum const expectedAnswer = problem.terms.reduce((sum, t) => sum + t, 0) if (problem.correctAnswer !== expectedAnswer) { warnings.push( `Problem ${problem.problemNumber}: correctAnswer (${problem.correctAnswer}) ` + `doesn't match sum of terms (${expectedAnswer})` ) } // Check for negative answers (valid but unusual) if (expectedAnswer < 0) { warnings.push( `Problem ${problem.problemNumber}: negative answer (${expectedAnswer}) - verify this is correct` ) } // Check for very large numbers (may indicate misread) if (Math.abs(expectedAnswer) > 9999) { warnings.push( `Problem ${problem.problemNumber}: very large answer (${expectedAnswer}) - verify reading` ) } // Check for low confidence if (problem.termsConfidence < 0.5) { warnings.push( `Problem ${problem.problemNumber}: very low term confidence (${problem.termsConfidence.toFixed(2)})` ) } } return { valid: warnings.length === 0, warnings, } } /** * Compute aggregate skill statistics from slot results */ export function computeSkillStats( slotResults: Omit<SlotResult, 'timestamp'>[] ): Map<string, { correct: number; incorrect: number; total: number }> { const skillStats = new Map<string, { correct: number; incorrect: number; total: number }>() for (const result of slotResults) { for (const skill of result.skillsExercised) { const stats = skillStats.get(skill) ?? { correct: 0, incorrect: 0, total: 0, } stats.total++ if (result.isCorrect) { stats.correct++ } else if (result.studentAnswer !== 0) { // Only count as incorrect if student answered stats.incorrect++ } skillStats.set(skill, stats) } } return skillStats } |