All files pages.js

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80% Branches 48/60
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/* PAGES.JS - Page-Specific Initialization ==============================================
   Copyright 2025, Mark Forscher */
/* ======================================================================================= */
 
import { Utils } from './utils.js';
 
export class Pages {
  constructor() {
    this._resizeHandler = null;
  }
 
  // Initialize page-specific functionality
  initPageSpecific() {
    try {
      // Read pageType from data attribute (CSP-compliant method)
      const pageType = document.body.dataset.pageType;
 
      if (pageType) {
        switch(pageType) {
          case "default":
            // Default layout - check for specific page types
            this.initDefaultPage();
            break;
          case "project":
            this.projectInit();
            break;
          case "post":
            this.postInit();
            break;
          case "album-promo":
            this.albumPromoInit();
            break;
          default:
        }
      }
    } catch (error) {
      console.error('Page-specific initialization failed:', error);
    }
  }
 
  // Initialize default layout pages
  initDefaultPage() {
    try {
      const pageTitle = document.body.id;
 
      switch(pageTitle) {
        case "Home":
          this.indexInit();
          break;
        case "Info":
          this.infoInit();
          break;
        case "Contact":
          this.connectInit();
          break;
        case "Journal":
          this.journalInit();
          break;
        case "Under After Records":
          this.recordsInit();
          break;
        default:
      }
    } catch (error) {
      console.error('Default page initialization failed:', error);
    }
  }
 
  // Page-specific initialization functions
  indexInit() {
  }
 
  infoInit() {
  }
 
  connectInit() {
  }
 
  journalInit() {
    this.initJournalMasonry();
  }
 
  recordsInit() {
    try {
      const recordsItems = document.querySelectorAll('.records-item');
 
      if (!recordsItems || recordsItems.length === 0) {
        return; // No records items on page
      }
 
      // Create hover image element
      const hoverImage = document.createElement('div');
      hoverImage.id = 'hover-image';
      document.body.appendChild(hoverImage);
 
      let targetX = 0; // Target mouse position
      let targetY = 0;
      let currentX = 0; // Current hover image position
      let currentY = 0;
      let animationFrameId = null;
      let isHovering = false;
 
      // Smooth animation loop with cleanup tracking (only runs when hovering)
      function animateHoverImage() {
        if (!isHovering) {
          animationFrameId = null;
          return; // Stop animation when not hovering
        }
 
        const easingFactor = 0.1; // Adjust for more or less delay
        currentX += (targetX - currentX) * easingFactor;
        currentY += (targetY - currentY) * easingFactor;
 
        hoverImage.style.transform = `translate(${currentX}px, ${currentY}px)`;
        animationFrameId = requestAnimationFrame(animateHoverImage);
      }
 
      // Add cleanup on page unload
      window.addEventListener('beforeunload', () => {
        if (animationFrameId) {
          cancelAnimationFrame(animationFrameId);
        }
        if (hoverImage && hoverImage.parentNode) {
          hoverImage.parentNode.removeChild(hoverImage);
        }
      }, { once: true });
 
      // Initialize each records item
      recordsItems.forEach(item => {
        // Hover logic
        item.addEventListener('mouseenter', () => {
          const imageUrl = item.getAttribute('data-cover');
          if (imageUrl) {
            hoverImage.style.backgroundImage = `url(${imageUrl})`;
            hoverImage.style.opacity = '1'; // Show the hover image
            hoverImage.style.transform = 'translate(-50%, -50%) scale(1)'; // Scale up
            isHovering = true;
 
            // Start animation loop if not already running
            Eif (!animationFrameId) {
              animateHoverImage();
            }
          }
        });
 
        item.addEventListener('mousemove', (e) => {
          targetX = e.pageX + 20; // Offset from the mouse
          targetY = e.pageY + 20;
        });
 
        item.addEventListener('mouseleave', () => {
          hoverImage.style.opacity = '0'; // Hide the hover image
          hoverImage.style.transform = 'translate(-50%, -50%) scale(0.8)'; // Scale down
          isHovering = false;
          // Animation will stop automatically on next frame
        });
 
        // Click logic for expanding/collapsing
        item.addEventListener('click', () => {
          item.classList.toggle('expanded');
        });
      });
    } catch (error) {
      console.error('Records page initialization failed:', error);
    }
  }
 
  workInit() {
  }
 
  projectInit() {
  }
 
  postInit() {
  }
 
  albumPromoInit() {
  }
 
  // Modern vanilla JS masonry implementation for journal page
  initJournalMasonry() {
    const grid = Utils.$1('.masonry-grid');
    if (!grid) {
      console.error("Journal masonry grid not found!");
      return;
    }
 
    // Initialize CSS Grid masonry
    this.setupCSSMasonry(grid);
 
    // Setup lazy loading for journal images
    this.initJournalLazyLoading(grid);
 
    // Force layout after a short delay
    setTimeout(() => this.updateJournalLayout(grid), 100);
  }
 
  // Setup CSS-based masonry layout
  setupCSSMasonry(grid) {
    // Apply CSS Grid masonry styles with responsive columns
    const windowWidth = window.innerWidth;
    let columns = '1fr 1fr 1fr 1fr'; // 4 columns default
 
    if (windowWidth <= 600) {
      columns = '1fr 1fr'; // 2 columns on mobile
    } else if (windowWidth <= 1000) {
      columns = '1fr 1fr 1fr'; // 3 columns on tablet
    }
 
    grid.style.display = 'grid';
    grid.style.gridTemplateColumns = columns;
    grid.style.gridAutoRows = '10px';
    grid.style.gap = '40px';
    grid.style.alignItems = 'start';
 
    // Listen for window resize to update layout (debounced)
    if (!this._resizeHandler) {
      this._resizeHandler = Utils.debounce(() => {
        this.animatedResizeUpdate(grid);
      }, 150); // Faster debounce for snappier response
      window.addEventListener('resize', this._resizeHandler);
    }
 
    // Calculate and set grid row spans for each item
    this.updateJournalLayout(grid);
  }
 
  // Update layout by calculating grid spans
  updateJournalLayout(grid) {
    const items = grid.querySelectorAll('.journal-items-item');
 
    items.forEach(item => {
      const img = item.querySelector('img:not(.spinner)');
      if (img && img.complete && img.naturalHeight > 0) {
        const rowHeight = 10; // matches gridAutoRows
        const rowGap = 40; // matches gap
        const itemHeight = item.offsetHeight;
        const rowSpan = Math.ceil((itemHeight + rowGap) / (rowHeight + rowGap));
        item.style.gridRowEnd = `span ${rowSpan}`;
      }
    });
  }
 
  // Vanilla JS lazy loading for journal images
  initJournalLazyLoading(grid) {
    const lazyImages = grid.querySelectorAll('.lazy');
 
    if (lazyImages.length === 0) return;
 
    const imageObserver = new IntersectionObserver(
      (entries) => {
        entries.forEach(entry => {
          Eif (entry.isIntersecting) {
            const img = entry.target;
            const newSrc = img.dataset.src;
 
            Eif (newSrc) {
              // Preload image
              const tempImg = new Image();
              tempImg.onload = () => {
                img.src = newSrc;
                img.classList.remove('lazy');
                img.classList.add('lazy-loaded');
 
                // Remove spinner
                const spinner = img.closest('.journal-item-img').querySelector('.spinner');
                Eif (spinner) {
                  spinner.remove();
                }
 
                // Mark item as ready and trigger fade-in
                const parentItem = img.closest('.journal-items-item');
                parentItem.classList.add('image-loaded');
 
                // Trigger fade-in if item is in viewport with stagger delay
                Eif (Utils.isElementVisible(parentItem)) {
                  const allItems = grid.querySelectorAll('.journal-items-item');
                  const itemIndex = Array.from(allItems).indexOf(parentItem);
                  setTimeout(() => {
                    parentItem.classList.add('visible');
                  }, itemIndex * 150); // Stagger delay
                }
 
                // Update masonry layout after image loads
                setTimeout(() => this.updateJournalLayout(grid), 100);
              };
 
              tempImg.src = newSrc;
            }
 
            imageObserver.unobserve(img);
          }
        });
      },
      {
        rootMargin: '200px 0px',
        threshold: 0.1
      }
    );
 
    lazyImages.forEach(img => {
      imageObserver.observe(img);
    });
 
    // Fallback layout update
    setTimeout(() => this.updateJournalLayout(grid), 2000);
  }
 
  // Animated resize update for smooth repositioning
  animatedResizeUpdate(grid) {
    const items = grid.querySelectorAll('.journal-items-item');
 
    // Capture current positions
    const oldPositions = Array.from(items).map(item => {
      const rect = item.getBoundingClientRect();
      return {
        element: item,
        x: rect.left,
        y: rect.top
      };
    });
 
    // Update the grid layout (skip resize handler setup to prevent recursion)
    this.updateGridColumns(grid);
 
    // Force layout calculation
    grid.offsetHeight;
 
    // Update individual item positions
    this.updateJournalLayout(grid);
 
    // Force another layout calculation
    grid.offsetHeight;
 
    // Calculate new positions and animate
    items.forEach((item, index) => {
      const oldPos = oldPositions[index];
      const newRect = item.getBoundingClientRect();
      const deltaX = oldPos.x - newRect.left;
      const deltaY = oldPos.y - newRect.top;
 
      // Only animate if position actually changed
      if (Math.abs(deltaX) > 1 || Math.abs(deltaY) > 1) {
        // Set initial position to old position
        item.style.transform = `translate(${deltaX}px, ${deltaY}px)`;
        item.style.transition = 'none';
 
        // Force reflow
        item.offsetHeight;
 
        // Animate to new position
        item.style.transition = 'transform 0.25s cubic-bezier(0.4, 0.0, 0.2, 1)';
        item.style.transform = 'translate(0, 0)';
 
        // Clean up after animation
        setTimeout(() => {
          item.style.transform = '';
          item.style.transition = '';
        }, 250);
      }
    });
  }
 
  // Update grid columns without setting up resize handlers
  updateGridColumns(grid) {
    const windowWidth = window.innerWidth;
    let columns = '1fr 1fr 1fr 1fr'; // 4 columns default
 
    if (windowWidth <= 600) {
      columns = '1fr 1fr'; // 2 columns on mobile
    } else if (windowWidth <= 1200) {
      columns = '1fr 1fr 1fr'; // 3 columns on tablet
    }
 
    grid.style.gridTemplateColumns = columns;
  }
}