/**
 * Layout Renderer
 * Phase 5: Sites Renderer & Publishing
 * 
 * Renders different layout types for sites using shared components.
 */
import React from 'react';
import type { SiteDefinition } from '../types';
import { renderTemplate } from './templateEngine';
import { renderPageByType } from './pageTypeRenderer';
import {
  DefaultLayout,
  MinimalLayout,
  MagazineLayout,
  EcommerceLayout,
  PortfolioLayout,
  BlogLayout,
  CorporateLayout,
} from '@shared/layouts';

export type LayoutType = 
  | 'default'
  | 'minimal'
  | 'magazine'
  | 'ecommerce'
  | 'portfolio'
  | 'blog'
  | 'corporate';

/**
 * Render site layout based on site definition.
 */
export function renderLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const layoutType = siteDefinition.layout as LayoutType;
  
  switch (layoutType) {
    case 'minimal':
      return renderMinimalLayout(siteDefinition);
    case 'magazine':
      return renderMagazineLayout(siteDefinition);
    case 'ecommerce':
      return renderEcommerceLayout(siteDefinition);
    case 'portfolio':
      return renderPortfolioLayout(siteDefinition);
    case 'blog':
      return renderBlogLayout(siteDefinition);
    case 'corporate':
      return renderCorporateLayout(siteDefinition);
    case 'default':
    default:
      return renderDefaultLayout(siteDefinition);
  }
}

/**
 * Default layout: Standard header, content, footer.
 * Uses shared DefaultLayout component with fully styled modern design.
 */
function renderDefaultLayout(siteDefinition: SiteDefinition): React.ReactElement {
  // Find home page for hero (only show hero on home page or when showing all pages)
  const homePage = siteDefinition.pages.find(p => p.slug === 'home');
  const heroBlock = homePage?.blocks?.find(b => b.type === 'hero');
  
  // Only show hero if we're on home page or showing all pages
  const isHomePage = siteDefinition.pages.length === 1 && siteDefinition.pages[0]?.slug === 'home';
  const showHero = isHomePage || (homePage && siteDefinition.pages.length > 1);
  const hero: React.ReactNode = (showHero && heroBlock) ? (renderTemplate(heroBlock) as React.ReactNode) : undefined;

  // Render all pages using page-type-specific templates
  const sections = siteDefinition.pages
    .filter((page) => page.status !== 'draft' && page.status !== 'generating')
    .sort((a, b) => (a.order || 0) - (b.order || 0))
    .map((page) => {
      // Use page-type-specific renderer if available
      const blocksToRender = page.slug === 'home' && heroBlock && showHero
        ? page.blocks?.filter(b => b.type !== 'hero') || []
        : page.blocks || [];

      // Render using page-type template
      return (
        <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
          {renderPageByType(page, blocksToRender)}
        </div>
      );
    });

  return (
    <DefaultLayout
      hero={hero as any}
      sections={sections}
    />
  );
}

/**
 * Minimal layout: Clean, minimal design.
 * Uses shared MinimalLayout component.
 */
function renderMinimalLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <MinimalLayout>
      {mainContent}
    </MinimalLayout>
  );
}

/**
 * Magazine layout: Editorial, content-focused.
 * Uses shared MagazineLayout component.
 */
function renderMagazineLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <MagazineLayout
      mainContent={mainContent}
    />
  );
}

/**
 * Ecommerce layout: Product-focused.
 * Uses shared EcommerceLayout component.
 */
function renderEcommerceLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <EcommerceLayout
      mainContent={mainContent}
    />
  );
}

/**
 * Portfolio layout: Showcase.
 * Uses shared PortfolioLayout component.
 */
function renderPortfolioLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <PortfolioLayout
      mainContent={mainContent}
    />
  );
}

/**
 * Blog layout: Content-first.
 * Uses shared BlogLayout component.
 */
function renderBlogLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <BlogLayout
      mainContent={mainContent}
    />
  );
}

/**
 * Corporate layout: Business.
 * Uses shared CorporateLayout component.
 */
function renderCorporateLayout(siteDefinition: SiteDefinition): React.ReactElement {
  const mainContent = (
    <>
      {siteDefinition.pages
        .filter((page) => page.status !== 'draft' && page.status !== 'generating')
        .sort((a, b) => (a.order || 0) - (b.order || 0))
        .map((page) => (
          <div key={page.id} className="page-wrapper" data-page-slug={page.slug}>
            {renderPageByType(page, page.blocks || [])}
          </div>
        ))}
    </>
  );

  return (
    <CorporateLayout
      mainContent={mainContent}
    />
  );
}

// Note: Navigation and page rendering are now handled within each layout component