feat: implement Phase 2 - Core conversion engine and UI

Complete Phase 2 implementation with working unit converter:

Core Conversion Engine (lib/units.ts):
- Type-safe wrapper for convert-units library
- Support for all 23 measures with TypeScript types
- getAllMeasures() - Get all available categories
- getUnitsForMeasure() - Get units for specific measure
- getUnitInfo() - Get detailed unit information
- convertUnit() - Convert between two units
- convertToAll() - Convert to all compatible units
- getCategoryColor() - Get Tailwind color class for measure
- formatMeasureName() - Format measure names for display
- searchUnits() - Fuzzy search across all units

Utility Functions (lib/utils.ts):
- cn() - Merge Tailwind classes with clsx and tailwind-merge
- formatNumber() - Smart number formatting with scientific notation
- debounce() - Debounce helper for inputs
- parseNumberInput() - Parse user input to number
- getRelativeTime() - Format timestamps

UI Components:
- Input - Styled input with focus states
- Button - 6 variants (default, destructive, outline, secondary, ghost, link)
- Card - Card container with header, title, description, content, footer

Main Converter Component (components/converter/MainConverter.tsx):
- Real-time conversion as user types
- Category selection with 23 color-coded buttons
- Input field with unit selector
- Grid display of all conversions in selected measure
- Color-coded result cards with category colors
- Responsive layout (1/2/3 column grid)

Homepage Updates:
- Integrated MainConverter component
- Clean header with gradient text
- Uses design system colors

Dependencies Added:
- clsx - Class name utilities
- tailwind-merge - Merge Tailwind classes intelligently

Features Working:
✓ Select from 23 measurement categories
✓ Real-time conversion to all compatible units
✓ Color-coded categories
✓ Formatted number display
✓ Responsive design

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
2025-11-08 09:34:57 +01:00
parent 365b8ed328
commit 901d9047e2
9 changed files with 652 additions and 17 deletions

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'use client';
import { useState, useEffect } from 'react';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Input } from '@/components/ui/input';
import { Button } from '@/components/ui/button';
import {
getAllMeasures,
getUnitsForMeasure,
convertToAll,
formatMeasureName,
getCategoryColor,
type Measure,
type ConversionResult,
} from '@/lib/units';
import { parseNumberInput, formatNumber } from '@/lib/utils';
export default function MainConverter() {
const [selectedMeasure, setSelectedMeasure] = useState<Measure>('length');
const [selectedUnit, setSelectedUnit] = useState<string>('m');
const [inputValue, setInputValue] = useState<string>('1');
const [conversions, setConversions] = useState<ConversionResult[]>([]);
const measures = getAllMeasures();
const units = getUnitsForMeasure(selectedMeasure);
// Update conversions when input changes
useEffect(() => {
const numValue = parseNumberInput(inputValue);
if (numValue !== null && selectedUnit) {
const results = convertToAll(numValue, selectedUnit);
setConversions(results);
} else {
setConversions([]);
}
}, [inputValue, selectedUnit]);
// Update selected unit when measure changes
useEffect(() => {
const availableUnits = getUnitsForMeasure(selectedMeasure);
if (availableUnits.length > 0) {
setSelectedUnit(availableUnits[0]);
}
}, [selectedMeasure]);
return (
<div className="w-full max-w-6xl mx-auto space-y-6">
{/* Category Selection */}
<Card>
<CardHeader>
<CardTitle>Select Category</CardTitle>
</CardHeader>
<CardContent>
<div className="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-6 gap-2">
{measures.map((measure) => (
<Button
key={measure}
variant={selectedMeasure === measure ? 'default' : 'outline'}
size="sm"
onClick={() => setSelectedMeasure(measure)}
className="justify-start"
style={{
backgroundColor:
selectedMeasure === measure
? `var(--color-${getCategoryColor(measure)})`
: undefined,
}}
>
{formatMeasureName(measure)}
</Button>
))}
</div>
</CardContent>
</Card>
{/* Input Section */}
<Card>
<CardHeader>
<CardTitle>Convert {formatMeasureName(selectedMeasure)}</CardTitle>
</CardHeader>
<CardContent className="space-y-4">
<div className="flex gap-4">
<div className="flex-1">
<label className="text-sm font-medium mb-2 block">Value</label>
<Input
type="text"
inputMode="decimal"
value={inputValue}
onChange={(e) => setInputValue(e.target.value)}
placeholder="Enter value"
className="text-lg"
/>
</div>
<div className="w-48">
<label className="text-sm font-medium mb-2 block">From Unit</label>
<select
value={selectedUnit}
onChange={(e) => setSelectedUnit(e.target.value)}
className="flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
>
{units.map((unit) => (
<option key={unit} value={unit}>
{unit}
</option>
))}
</select>
</div>
</div>
</CardContent>
</Card>
{/* Results */}
<Card>
<CardHeader>
<CardTitle>Conversions</CardTitle>
</CardHeader>
<CardContent>
<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
{conversions.map((conversion) => (
<div
key={conversion.unit}
className="p-4 rounded-lg border bg-card hover:bg-accent/50 transition-colors"
style={{
borderLeftWidth: '4px',
borderLeftColor: `var(--color-${getCategoryColor(selectedMeasure)})`,
}}
>
<div className="text-sm text-muted-foreground mb-1">
{conversion.unitInfo.plural}
</div>
<div className="text-2xl font-bold">
{formatNumber(conversion.value)}
</div>
<div className="text-sm text-muted-foreground mt-1">
{conversion.unit}
</div>
</div>
))}
</div>
</CardContent>
</Card>
</div>
);
}

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import * as React from 'react';
import { cn } from '@/lib/utils';
export interface ButtonProps
extends React.ButtonHTMLAttributes<HTMLButtonElement> {
variant?: 'default' | 'destructive' | 'outline' | 'secondary' | 'ghost' | 'link';
size?: 'default' | 'sm' | 'lg' | 'icon';
}
const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
({ className, variant = 'default', size = 'default', ...props }, ref) => {
return (
<button
className={cn(
'inline-flex items-center justify-center rounded-md text-sm font-medium ring-offset-background transition-colors',
'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2',
'disabled:pointer-events-none disabled:opacity-50',
{
'bg-primary text-primary-foreground hover:bg-primary/90':
variant === 'default',
'bg-destructive text-destructive-foreground hover:bg-destructive/90':
variant === 'destructive',
'border border-input bg-background hover:bg-accent hover:text-accent-foreground':
variant === 'outline',
'bg-secondary text-secondary-foreground hover:bg-secondary/80':
variant === 'secondary',
'hover:bg-accent hover:text-accent-foreground': variant === 'ghost',
'text-primary underline-offset-4 hover:underline': variant === 'link',
},
{
'h-10 px-4 py-2': size === 'default',
'h-9 rounded-md px-3': size === 'sm',
'h-11 rounded-md px-8': size === 'lg',
'h-10 w-10': size === 'icon',
},
className
)}
ref={ref}
{...props}
/>
);
}
);
Button.displayName = 'Button';
export { Button };

78
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import * as React from 'react';
import { cn } from '@/lib/utils';
const Card = React.forwardRef<
HTMLDivElement,
React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
<div
ref={ref}
className={cn(
'rounded-lg border bg-card text-card-foreground shadow-sm',
className
)}
{...props}
/>
));
Card.displayName = 'Card';
const CardHeader = React.forwardRef<
HTMLDivElement,
React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
<div
ref={ref}
className={cn('flex flex-col space-y-1.5 p-6', className)}
{...props}
/>
));
CardHeader.displayName = 'CardHeader';
const CardTitle = React.forwardRef<
HTMLParagraphElement,
React.HTMLAttributes<HTMLHeadingElement>
>(({ className, ...props }, ref) => (
<h3
ref={ref}
className={cn(
'text-2xl font-semibold leading-none tracking-tight',
className
)}
{...props}
/>
));
CardTitle.displayName = 'CardTitle';
const CardDescription = React.forwardRef<
HTMLParagraphElement,
React.HTMLAttributes<HTMLParagraphElement>
>(({ className, ...props }, ref) => (
<p
ref={ref}
className={cn('text-sm text-muted-foreground', className)}
{...props}
/>
));
CardDescription.displayName = 'CardDescription';
const CardContent = React.forwardRef<
HTMLDivElement,
React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
<div ref={ref} className={cn('p-6 pt-0', className)} {...props} />
));
CardContent.displayName = 'CardContent';
const CardFooter = React.forwardRef<
HTMLDivElement,
React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
<div
ref={ref}
className={cn('flex items-center p-6 pt-0', className)}
{...props}
/>
));
CardFooter.displayName = 'CardFooter';
export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent };

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import * as React from 'react';
import { cn } from '@/lib/utils';
export interface InputProps
extends React.InputHTMLAttributes<HTMLInputElement> {}
const Input = React.forwardRef<HTMLInputElement, InputProps>(
({ className, type, ...props }, ref) => {
return (
<input
type={type}
className={cn(
'flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background',
'file:border-0 file:bg-transparent file:text-sm file:font-medium',
'placeholder:text-muted-foreground',
'focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2',
'disabled:cursor-not-allowed disabled:opacity-50',
className
)}
ref={ref}
{...props}
/>
);
}
);
Input.displayName = 'Input';
export { Input };