tutorials/index.html at main · thunkable/tutorials · GitHub

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<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>App Worksheet</title>
    <style>
      body {
        font-family: "Segoe UI", system-ui, sans-serif;
        background-color: #f0f2f5;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        margin: 0;
        padding: 20px;
      }

      .card {
        background: white;
        width: 100%;
        max-width: 800px;
        border-radius: 12px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        border: 1px solid #e1e4e8;
      }

      /* Loading Screen */
      .loading-state {
        padding: 40px;
        text-align: center;
        color: #666;
        font-size: 1.2rem;
        display: none; /* Hidden by default */
      }

      /* 1. Header (Title) */
      .header-section {
        padding: 1rem 1.5rem;
        border-bottom: 1px solid #eee;
        background: #fff;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
      }

      .header-left {
        display: flex;
        flex-direction: column;
      }

      .header-right {
        display: flex;
        gap: 10px;
        align-items: center;
      }

      .step-badge {
        background-color: #e3f2fd;
        color: #0d47a1;
        font-size: 0.75rem;
        font-weight: 700;
        padding: 4px 10px;
        border-radius: 4px;
        text-transform: uppercase;
        letter-spacing: 1px;
        display: inline-block;
        margin-bottom: 0.25rem;
      }

      h2 {
        margin: 0;
        color: #202124;
        font-size: 1.4rem;
      }

      #week-select {
        width: 90px;
      }

      #section-select {
        width: 325px;
      }

      /* 2. Image Component */
      .image-section {
        background-color: #f8f9fa;
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 1rem 0;
        border-bottom: 1px solid #eee;
        min-height: 300px;
      }

      .image-section img {
        max-width: 95%;
        max-height: 400px;
        border-radius: 6px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        object-fit: contain;
        display: none;
      }

      /* 3. Text Component */
      .text-section {
        padding: 2rem;
        color: #3c4043;
        line-height: 1.6;
        font-size: 1.05rem;
        flex-grow: 1;
        min-height: 100px;
      }

      /* Block Introduction Section */
      .block-intro {
        margin-top: 1.5rem;
        padding: 1rem;
        background-color: #f8f9fa;
        border-radius: 8px;
        border-left: 4px solid #1a73e8;
      }

      .block-intro-header {
        font-weight: bold;
        margin-bottom: 0.5rem;
        color: #202124;
      }

      .block-intro img {
        max-width: 100%;
        max-height: 300px;
        margin: 0.5rem 0;
        border-radius: 4px;
      }

      .block-intro-description {
        color: #5f6368;
        font-size: 0.95rem;
      }

      /* 4. Controls (Next/Back) */
      .controls {
        display: flex;
        justify-content: space-between;
        padding: 1.25rem 2rem;
        background-color: #fff;
        border-top: 1px solid #eee;
      }

      button {
        background-color: #1a73e8;
        color: white;
        border: none;
        padding: 10px 24px;
        border-radius: 6px;
        font-size: 1rem;
        font-weight: 500;
        cursor: pointer;
        transition: background 0.2s;
      }

      button:hover { background-color: #1557b0; }
      button:disabled { background-color: #dadce0; color: #80868b; cursor: not-allowed; }

      select {
        padding: 6px 10px;
        border-radius: 4px;
        border: 1px solid #ccc;
        font-size: 0.9rem;
      }
    </style>
  </head>
  <body>
    <div class="card">

      <div id="loading-msg" class="loading-state">
        Loading...
      </div>

      <div id="main-content">
        <div class="header-section">
          <div class="header-left">
            <div id="step-badge" class="step-badge">Step 1</div>
            <h2 id="step-title">Welcome</h2>
          </div>
          <div class="header-right">
            <select id="week-select" onchange="handleWeekChange()"></select>
            <select id="section-select" onchange="handleSectionChange()"></select>
          </div>
        </div>

        <div class="image-section" id="image-block">
          <img id="step-image" src="" alt="Step visualization" />
        </div>

        <div id="step-text" class="text-section">
            Select a lesson below to begin.
        </div>

        <div class="controls">
          <button id="btn-back" onclick="changeStep(-1)">Back</button>
          <button id="btn-next" onclick="changeStep(1)">Next</button>
        </div>
      </div>


    </div>

    <script>
      let allSteps = [];        // All steps from the markdown file
      let sections = [];        // Array of sections, each with start/end indices
      let currentSection = 0;   // Currently selected section index
      let currentStepInSection = 0;  // Current step within the section

      const lessonData = {
          "Week 2": "./Weeks/Week 2/w2_guide.md",
          "Week 4": "./Weeks/Week 4/w4_guide.md",
          "Week 5": "./Weeks/Week 5/w5_guide.md",
          "Week 6": "./Weeks/Week 6/w6_guide.md",
          "Week 7": "./Weeks/Week 7/w7_guide.md",
          "Week 8": "./Weeks/Week 8/w8_guide.md",
      };

      // Initialize
      function init() {
          const weekSelect = document.getElementById('week-select');

          // Populate the Week Dropdown
          Object.keys(lessonData).forEach(week => {
              const option = document.createElement('option');
              option.value = week;
              option.textContent = week;
              weekSelect.appendChild(option);
          });

          // Load the first week
          handleWeekChange();
      }

      function handleWeekChange() {
          const weekSelect = document.getElementById('week-select');
          const selectedWeek = weekSelect.value;
          const filename = lessonData[selectedWeek];
          loadMarkdownFile(filename);
      }

      function handleSectionChange() {
          const sectionSelect = document.getElementById('section-select');
          currentSection = parseInt(sectionSelect.value, 10);
          currentStepInSection = 0;
          renderStep();
      }

      // Fetch Logic
      function loadMarkdownFile(filename) {
          currentSection = 0;
          currentStepInSection = 0;
          document.getElementById("main-content").style.opacity = "0.5";
          document.getElementById("loading-msg").style.display = "block";

          fetch(filename)
            .then((response) => {
              if (!response.ok) throw new Error("Could not find " + filename);
              return response.text();
            })
            .then((text) => {
              allSteps = parseMarkdown(text);
              sections = splitIntoSections(allSteps);

              document.getElementById("loading-msg").style.display = "none";
              document.getElementById("main-content").style.opacity = "1";

              populateSectionDropdown();
              renderStep();
            })
            .catch((error) => {
              document.getElementById("loading-msg").innerHTML = `Error: ${error.message}`;
              document.getElementById("loading-msg").style.display = "block";
              console.error(error);
            });
      }

      // Parse Markdown
      function parseMarkdown(md) {
        const rawSteps = md.split(/^---$/m);

        // First pass: parse all steps
        const parsedSteps = rawSteps
          .map((stepContent) => {
            const lines = stepContent.trim().split("\n");
            let title = "Step";
            let image = "";
            let textLines = [];
            let isCheckpoint = false;
            let checkpointName = null;
            let isBlockIntro = false;
            let blockName = "";
            let blockNameStyled = "";
            let blockImage = "";
            let blockDescription = "";

            lines.forEach((line) => {
              const trimmed = line.trim();
              if (trimmed.startsWith("# ")) {
                title = trimmed.replace("# ", "");
              } else if (trimmed.match(/!\[.*?\]\(.*?\)/)) {
                const match = trimmed.match(/\((.*?)\)/);
                if (match) image = match[1];
              } else if (trimmed.length > 0) {
                // Check for checkpoint or extension marker
                const checkpointMatch = trimmed.match(/\[([^\]]*(Checkpoint|Extension)[^\]]*)\]/i);
                if (checkpointMatch) {
                  isCheckpoint = true;
                  checkpointName = checkpointMatch[1].replace(/<[^>]*>/g, '').trim();
                }
                // Check for block introduction marker
                const blockMatch = trimmed.match(/font-weight:bold[^>]*>Block:<\/span>\s*(<span[^>]*>([^<]*)<\/span>[^<]*)/i);
                if (blockMatch) {
                  isBlockIntro = true;
                  blockNameStyled = blockMatch[1].trim();  // Preserve styled HTML span
                  blockName = blockMatch[2].trim();  // Plain text name for alt attribute
                }
                let parsed = trimmed
                  .replace(/\*\*(.*?)\*\*/g, "<b>$1</b>")
                  .replace(/`(.*?)`/g, '<code style="background:#eee;padding:2px 5px;border-radius:4px">$1</code>')
                  .replace(/\[([^\]]+)\]\((https?:\/\/[^)]+)\)/g, '<a href="$2" target="_blank">$1</a>');

                // Check if this is a list item (ordered or unordered, with optional indent for sublists)
                const indent = line.length - line.trimStart().length;
                const listMatch = parsed.match(/^(\d+)\.\s+(.*)$/);
                const letterMatch = parsed.match(/^([a-z])[.)]\s+(.*)$/);
                const unorderedMatch = parsed.match(/^[-*]\s+(.*)$/);
                if (listMatch) {
                  parsed = `<li data-indent="${indent}" value="${listMatch[1]}">${listMatch[2]}</li>`;
                } else if (letterMatch) {
                  parsed = `<li data-indent="${indent}" data-letter="true">${letterMatch[2]}</li>`;
                } else if (unorderedMatch) {
                  parsed = `<li data-indent="${indent}" data-ul="true">${unorderedMatch[1]}</li>`;
                }
                textLines.push(parsed);
              }
            });

            // For block intros, extract the block image and description
            if (isBlockIntro) {
              blockImage = image;
              // The description is all text after the block name line
              const textContent = textLines.join("<br>");
              const descMatch = textContent.split("<br>").slice(1).join("<br>").trim();
              blockDescription = descMatch;
            }

            // Wrap consecutive <li> elements in nested <ol>/<ul> tags
            let textContent = textLines.join("<br>");
            textContent = textContent.replace(/(<li[^>]*>.*?<\/li>)(<br><li[^>]*>.*?<\/li>)*/g, function(match) {
              const items = match.split('<br>').filter(s => s.trim());
              let result = '';
              let stack = []; // track open list tags and their indent levels

              items.forEach(item => {
                const indentMatch = item.match(/data-indent="(\d+)"/);
                const isUl = item.includes('data-ul="true"');
                const isLetter = item.includes('data-letter="true"');
                const indent = indentMatch ? parseInt(indentMatch[1]) : 0;
                const tag = isUl ? 'ul' : (isLetter ? 'ol type="a"' : 'ol');
                const closeTag = isUl ? 'ul' : 'ol';
                // Clean data attributes from the li
                const cleanItem = item.replace(/\s*data-indent="\d+"/, '').replace(/\s*data-ul="true"/, '').replace(/\s*data-letter="true"/, '');

                if (stack.length === 0) {
                  result += `<${tag}>`;
                  stack.push({ indent, closeTag });
                } else {
                  const top = stack[stack.length - 1];
                  if (indent > top.indent) {
                    // Open a nested list
                    result += `<${tag}>`;
                    stack.push({ indent, closeTag });
                  } else {
                    // Close lists until we reach the right level
                    while (stack.length > 1 && stack[stack.length - 1].indent > indent) {
                      const closed = stack.pop();
                      result += `</${closed.closeTag}>`;
                    }
                    // If tag type changed at same level, close and reopen
                    if (stack.length > 0 && stack[stack.length - 1].indent === indent && stack[stack.length - 1].closeTag !== closeTag) {
                      const closed = stack.pop();
                      result += `</${closed.closeTag}><${tag}>`;
                      stack.push({ indent, closeTag });
                    }
                  }
                }
                result += cleanItem;
              });

              // Close all remaining open tags
              while (stack.length > 0) {
                const closed = stack.pop();
                result += `</${closed.closeTag}>`;
              }
              return result;
            });

            return {
              title,
              image,
              text: textContent,
              isCheckpoint,
              checkpointName,
              isBlockIntro,
              blockName,
              blockNameStyled,
              blockImage,
              blockDescription
            };
          })
          .filter((s) => s.text || s.image);

        // Second pass: merge block intros with the following step
        const mergedSteps = [];
        let pendingBlockIntro = null;

        for (let i = 0; i < parsedSteps.length; i++) {
          const step = parsedSteps[i];

          if (step.isBlockIntro && !step.isCheckpoint) {
            // Store this block intro to merge with the next step
            // (but not if it's also a checkpoint/extension - those should stand alone)
            pendingBlockIntro = step;
          } else {
            // This is a regular step or a checkpoint/extension
            if (pendingBlockIntro) {
              // Merge the pending block intro into this step
              step.blockIntro = {
                name: pendingBlockIntro.blockName,
                nameStyled: pendingBlockIntro.blockNameStyled,
                image: pendingBlockIntro.blockImage,
                description: pendingBlockIntro.blockDescription
              };
              pendingBlockIntro = null;
            }
            // For checkpoint/extension steps that have their own block intro content,
            // set blockIntro from their own data
            if (step.isCheckpoint && step.isBlockIntro && step.blockNameStyled) {
              step.blockIntro = {
                name: step.blockName,
                nameStyled: step.blockNameStyled,
                image: step.blockImage,
                description: step.blockDescription
              };
            }
            mergedSteps.push(step);
          }
        }

        return mergedSteps;
      }

      // Split steps into sections based on checkpoints
      function splitIntoSections(steps) {
        const result = [];
        let sectionStart = 0;

        steps.forEach((step, index) => {
          if (step.isCheckpoint) {
            result.push({
              name: step.checkpointName || `Checkpoint ${result.length + 1}`,
              startIndex: sectionStart,
              endIndex: index
            });
            sectionStart = index + 1;
          }
        });

        // If there are remaining steps after the last checkpoint, create a final section
        if (sectionStart < steps.length) {
          result.push({
            name: `Section ${result.length + 1} (Final)`,
            startIndex: sectionStart,
            endIndex: steps.length - 1
          });
        }

        return result;
      }

      function populateSectionDropdown() {
        const sectionSelect = document.getElementById('section-select');
        sectionSelect.innerHTML = "";

        sections.forEach((section, index) => {
          const option = document.createElement('option');
          option.value = index;
          option.textContent = section.name;
          sectionSelect.appendChild(option);
        });
      }

      // Get steps for current section
      function getCurrentSectionSteps() {
        if (sections.length === 0) return [];
        const section = sections[currentSection];
        return allSteps.slice(section.startIndex, section.endIndex + 1);
      }

      // Render View
      function renderStep() {
        const sectionSteps = getCurrentSectionSteps();
        if (sectionSteps.length === 0) return;

        const current = sectionSteps[currentStepInSection];

        // Show "Overview" only for the first step of a section if it has no image
        if (currentStepInSection === 0 && !current.image) {
          document.getElementById("step-badge").innerText = "Overview";
        } else {
          // Count steps for numbering (excluding overview if present)
          const hasOverview = sectionSteps.length > 0 && !sectionSteps[0].image;
          const stepsToCount = hasOverview ? sectionSteps.slice(1) : sectionSteps;
          const adjustedIndex = hasOverview ? currentStepInSection - 1 : currentStepInSection;
          document.getElementById("step-badge").innerText = `Step ${adjustedIndex + 1} of ${stepsToCount.length}`;
        }
        document.getElementById("step-title").innerText = current.title;

        // Build the text content, including block intro if present
        let textContent = current.text;
        if (current.blockIntro) {
          textContent += `
            <div class="block-intro">
              <div class="block-intro-header">Block: ${current.blockIntro.nameStyled}</div>
              ${current.blockIntro.image ? `<img src="${current.blockIntro.image}" alt="Block: ${current.blockIntro.name}">` : ''}
              <div class="block-intro-description">${current.blockIntro.description}</div>
            </div>
          `;
        }
        document.getElementById("step-text").innerHTML = textContent;

        const imgEl = document.getElementById("step-image");
        if (current.image) {
          imgEl.src = current.image;
          imgEl.style.display = "block";
          document.getElementById("image-block").style.display = "flex";
        } else {
          imgEl.style.display = "none";
          document.getElementById("image-block").style.display = "none";
        }

        document.getElementById("btn-back").disabled = currentStepInSection === 0;

        const nextBtn = document.getElementById("btn-next");
        const isLastStepInSection = currentStepInSection === sectionSteps.length - 1;
        const isLastSection = currentSection === sections.length - 1;

        if (isLastStepInSection && isLastSection) {
          nextBtn.innerText = "Finish";
          nextBtn.disabled = true;
        } else if (isLastStepInSection) {
          nextBtn.innerText = "Next Section";
          nextBtn.disabled = false;
        } else {
          nextBtn.innerText = "Next";
          nextBtn.disabled = false;
        }
      }

      function changeStep(direction) {
        const sectionSteps = getCurrentSectionSteps();
        const nextIndex = currentStepInSection + direction;

        if (nextIndex >= 0 && nextIndex < sectionSteps.length) {
          currentStepInSection = nextIndex;
          renderStep();
        } else if (direction === 1 && nextIndex >= sectionSteps.length && currentSection < sections.length - 1) {
          // Move to next section
          currentSection++;
          currentStepInSection = 0;
          document.getElementById('section-select').value = currentSection;
          renderStep();
        }
      }

      // Start the app
      init();
    </script>
  </body>
</html>