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101f46e627
Extract color block calculation from ProgressMonitor component to colorBlockHelpers utility module for better testability and reusability. Changes: - Created colorBlockHelpers.ts with calculateColorBlocks() and findCurrentBlockIndex() - Added comprehensive unit tests (11 test cases, all passing) - Updated ProgressMonitor to use new utility functions - Reduced component complexity by removing embedded business logic Benefits: - Logic can be tested in isolation - Can be reused elsewhere if needed - Cleaner component code - Better separation of concerns Fixes #44 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
61 lines
2 KiB
TypeScript
61 lines
2 KiB
TypeScript
/**
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* Color Block Helpers
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*
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* Utility functions for calculating color block information from pattern data.
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* Extracted from ProgressMonitor component for better testability and reusability.
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*/
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import type { PesPatternData } from "../formats/import/client";
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import type { ColorBlock } from "../components/ProgressMonitor/types";
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/**
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* Calculate color blocks from decoded PEN pattern data
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*
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* Transforms PEN color blocks into enriched ColorBlock objects with thread metadata.
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* Returns an empty array if pattern or penStitches data is unavailable.
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*
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* @param displayPattern - The PES pattern data containing penStitches and threads
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* @returns Array of ColorBlock objects with thread information and stitch counts
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*/
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export function calculateColorBlocks(
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displayPattern: PesPatternData | null,
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): ColorBlock[] {
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if (!displayPattern || !displayPattern.penStitches) return [];
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const blocks: ColorBlock[] = [];
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// Use the pre-computed color blocks from decoded PEN data
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for (const penBlock of displayPattern.penStitches.colorBlocks) {
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const thread = displayPattern.threads[penBlock.colorIndex];
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blocks.push({
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colorIndex: penBlock.colorIndex,
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threadHex: thread?.hex || "#000000",
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threadCatalogNumber: thread?.catalogNumber ?? null,
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threadBrand: thread?.brand ?? null,
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threadDescription: thread?.description ?? null,
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threadChart: thread?.chart ?? null,
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startStitch: penBlock.startStitchIndex,
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endStitch: penBlock.endStitchIndex,
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stitchCount: penBlock.endStitchIndex - penBlock.startStitchIndex,
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});
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}
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return blocks;
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}
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/**
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* Find the index of the color block containing a specific stitch
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*
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* @param colorBlocks - Array of color blocks to search
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* @param currentStitch - The stitch index to find
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* @returns The index of the containing block, or -1 if not found
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*/
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export function findCurrentBlockIndex(
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colorBlocks: ColorBlock[],
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currentStitch: number,
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): number {
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return colorBlocks.findIndex(
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(block) =>
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currentStitch >= block.startStitch && currentStitch < block.endStitch,
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);
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}
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