leptos-shadcn-ui/docs/remediation/stub-implementation-plan.md

🔧 Stub Implementation Plan

Critical Issues Identified

Stub Code Locations

• Performance Audit: performance-audit/src/bundle_analysis.rs contains todo!() implementations
• Examples: examples/leptos/src/default.rs contains massive todo! blocks
• Standalone Demo: standalone-demo/src/main.rs contains unimplemented! blocks

Root Cause Analysis

The project contains placeholder implementations that were never completed:

1. Performance Audit: Bundle analysis functionality not implemented
2. Examples: Demo code contains placeholder implementations
3. Standalone Demo: Core functionality not implemented

Fix Strategy

Phase 1: Performance Audit Implementation

1.1 Bundle Analysis Implementation

// File: performance-audit/src/bundle_analysis.rs
// Replace todo!() with actual implementations:

pub struct BundleAnalyzer {
    pub bundle_size: usize,
    pub chunk_count: usize,
    pub asset_count: usize,
}

impl BundleAnalyzer {
    pub fn new() -> Self {
        Self {
            bundle_size: 0,
            chunk_count: 0,
            asset_count: 0,
        }
    }
    
    pub fn analyze_bundle(&mut self, bundle_path: &str) -> Result<BundleAnalysis, BundleError> {
        // Implementation: Analyze bundle file
        let metadata = std::fs::metadata(bundle_path)?;
        self.bundle_size = metadata.len() as usize;
        
        // Count chunks and assets
        self.chunk_count = self.count_chunks(bundle_path)?;
        self.asset_count = self.count_assets(bundle_path)?;
        
        Ok(BundleAnalysis {
            size: self.bundle_size,
            chunks: self.chunk_count,
            assets: self.asset_count,
            compression_ratio: self.calculate_compression_ratio(),
        })
    }
    
    fn count_chunks(&self, bundle_path: &str) -> Result<usize, BundleError> {
        // Implementation: Count JavaScript chunks
        Ok(1) // Placeholder
    }
    
    fn count_assets(&self, bundle_path: &str) -> Result<usize, BundleError> {
        // Implementation: Count CSS, images, fonts
        Ok(3) // Placeholder
    }
    
    fn calculate_compression_ratio(&self) -> f64 {
        // Implementation: Calculate compression ratio
        0.7 // Placeholder
    }
}

1.2 Bundle Analysis Types

#[derive(Debug, Clone)]
pub struct BundleAnalysis {
    pub size: usize,
    pub chunks: usize,
    pub assets: usize,
    pub compression_ratio: f64,
}

#[derive(Debug, thiserror::Error)]
pub enum BundleError {
    #[error("IO error: {0}")]
    Io(#[from] std::io::Error),
    #[error("Parse error: {0}")]
    Parse(String),
    #[error("Invalid bundle format")]
    InvalidFormat,
}

Phase 2: Examples Implementation

2.1 Default Example Implementation

// File: examples/leptos/src/default.rs
// Replace todo! blocks with actual implementations:

use leptos::prelude::*;
use leptos_shadcn_button::Button;
use leptos_shadcn_input::Input;
use leptos_shadcn_card::Card;

#[component]
pub fn DefaultExample() -> impl IntoView {
    let (count, set_count) = signal(0);
    let (input_value, set_input_value) = signal(String::new());
    
    view! {
        <div class="container mx-auto p-8">
            <h1 class="text-3xl font-bold mb-8">"Leptos ShadCN UI Examples"</h1>
            
            <div class="grid grid-cols-1 md:grid-cols-2 gap-8">
                <Card class="p-6">
                    <h2 class="text-xl font-semibold mb-4">"Button Example"</h2>
                    <div class="space-y-4">
                        <Button on_click=move |_| set_count.update(|c| *c += 1)>
                            "Count: " {count}
                        </Button>
                        <Button variant=ButtonVariant::Destructive on_click=move |_| set_count.set(0)>
                            "Reset"
                        </Button>
                    </div>
                </Card>
                
                <Card class="p-6">
                    <h2 class="text-xl font-semibold mb-4">"Input Example"</h2>
                    <div class="space-y-4">
                        <Input
                            value=input_value
                            on_change=move |value| set_input_value.set(value)
                            placeholder="Enter text here"
                        />
                        <p class="text-sm text-gray-600">
                            "You typed: " {input_value}
                        </p>
                    </div>
                </Card>
            </div>
        </div>
    }
}

Phase 3: Standalone Demo Implementation

3.1 Main Demo Implementation

// File: standalone-demo/src/main.rs
// Replace unimplemented! blocks with actual implementations:

use leptos::prelude::*;
use leptos_shadcn_button::Button;
use leptos_shadcn_input::Input;
use leptos_shadcn_card::Card;

#[component]
pub fn App() -> impl IntoView {
    let (name, set_name) = signal(String::new());
    let (email, set_email) = signal(String::new());
    let (submitted, set_submitted) = signal(false);
    
    let handle_submit = move |_| {
        if !name.get().is_empty() && !email.get().is_empty() {
            set_submitted.set(true);
        }
    };
    
    view! {
        <div class="min-h-screen bg-gray-50 py-12">
            <div class="max-w-md mx-auto">
                <Card class="p-8">
                    <h1 class="text-2xl font-bold text-center mb-8">
                        "Contact Form Demo"
                    </h1>
                    
                    if !submitted.get() {
                        <form class="space-y-6" on:submit=move |ev| {
                            ev.prevent_default();
                            handle_submit(());
                        }>
                            <div>
                                <label class="block text-sm font-medium mb-2">
                                    "Name"
                                </label>
                                <Input
                                    value=name
                                    on_change=move |value| set_name.set(value)
                                    placeholder="Enter your name"
                                    required=true
                                />
                            </div>
                            
                            <div>
                                <label class="block text-sm font-medium mb-2">
                                    "Email"
                                </label>
                                <Input
                                    value=email
                                    on_change=move |value| set_email.set(value)
                                    placeholder="Enter your email"
                                    input_type="email"
                                    required=true
                                />
                            </div>
                            
                            <Button
                                class="w-full"
                                on_click=handle_submit
                            >
                                "Submit"
                            </Button>
                        </form>
                    } else {
                        <div class="text-center">
                            <h2 class="text-xl font-semibold mb-4">
                                "Thank you for your submission!"
                            </h2>
                            <p class="text-gray-600 mb-4">
                                "Name: " {name}
                            </p>
                            <p class="text-gray-600 mb-6">
                                "Email: " {email}
                            </p>
                            <Button
                                variant=ButtonVariant::Outline
                                on_click=move |_| {
                                    set_name.set(String::new());
                                    set_email.set(String::new());
                                    set_submitted.set(false);
                                }
                            >
                                "Submit Another"
                            </Button>
                        </div>
                    }
                </Card>
            </div>
        </div>
    }
}

fn main() {
    leptos::mount_to_body(App)
}

Implementation Plan

Week 1: Performance Audit

• Implement BundleAnalyzer
• Add bundle analysis types
• Implement bundle analysis methods
• Add error handling

Week 2: Examples

• Implement default example
• Add interactive examples
• Implement form examples
• Add styling examples

Week 3: Standalone Demo

• Implement main demo
• Add form functionality
• Add state management
• Add styling

Success Criteria

Performance Audit

• Bundle analysis works
• Performance metrics are accurate
• Error handling works
• Tests pass

Examples

• All examples work
• Interactive features work
• Styling is correct
• Documentation is clear

Standalone Demo

• Demo runs successfully
• Form functionality works
• State management works
• Styling is correct

Risk Mitigation

High Risk

• Performance: Ensure bundle analysis is accurate
• Functionality: Ensure all features work correctly
• Styling: Ensure styling doesn't break

Medium Risk

• Test Coverage: Maintain comprehensive test coverage
• Documentation: Keep documentation up to date

Low Risk

• Code Style: Maintain consistent code style
• Import Issues: Standardize import patterns

Files to Fix

Critical Files

1. performance-audit/src/bundle_analysis.rs
2. examples/leptos/src/default.rs
3. standalone-demo/src/main.rs

Supporting Files

1. performance-audit/Cargo.toml
2. examples/leptos/Cargo.toml
3. standalone-demo/Cargo.toml

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Priority: 🟡 P1 - HIGH Estimated Effort: 3 weeks Dependencies: None