// const express = require("express");
// const bodyParser = require("body-parser");

// const app = express();
// const PORT = 8080;

// // Middleware to parse JSON
// app.use(bodyParser.json());

// // In-memory data store for demonstration
// let attributesData = {
//   attributes: [],
// };

// // CREATE - Add or update attributes
// app.post("/attributes", (req, res) => {
//   const { attributes } = req.body;

//   if (!attributes || !Array.isArray(attributes)) {
//     return res.status(400).json({ error: "Attributes must be an array" });
//   }

//   for (const attribute of attributes) {
//     if (!attribute.key || !attribute.value) {
//       return res.status(400).json({
//         error: "Each attribute must have a 'key' and 'value'",
//       });
//     }

//     // Check if the attribute already exists; if yes, update it
//     const existingIndex = attributesData.attributes.findIndex(
//       (item) => item.key === attribute.key
//     );
//     if (existingIndex !== -1) {
//       attributesData.attributes[existingIndex].value = attribute.value;
//     } else {
//       // Add new attribute
//       attributesData.attributes.push(attribute);
//     }
//   }

//   res.status(201).json({
//     message: "Attributes updated successfully",
//     attributes: attributesData.attributes,
//   });
// });

// // READ - Get all attributes
// app.get("/attributes", (req, res) => {
//   res.json({
//     message: "Attributes retrieved successfully",
//     attributes: attributesData.attributes,
//   });
// });

// // READ - Get a specific attribute by key
// app.get("/attributes/:key", (req, res) => {
//   const { key } = req.params;

//   const attribute = attributesData.attributes.find(
//     (item) => item.key === key
//   );

//   if (!attribute) {
//     return res
//       .status(404)
//       .json({ error: `Attribute with key '${key}' not found` });
//   }

//   res.json({
//     message: "Attribute retrieved successfully",
//     attribute,
//   });
// });

// // UPDATE - Update a specific attribute by key
// app.put("/attributes/:key", (req, res) => {
//   const { key } = req.params;
//   const { value } = req.body;

//   if (!value) {
//     return res
//       .status(400)
//       .json({ error: "Value is required to update the attribute" });
//   }

//   const attribute = attributesData.attributes.find(
//     (item) => item.key === key
//   );

//   if (!attribute) {
//     return res
//       .status(404)
//       .json({ error: `Attribute with key '${key}' not found` });
//   }

//   // Update the value
//   attribute.value = value;

//   res.json({
//     message: "Attribute updated successfully",
//     attributes: attributesData.attributes,
//   });
// });

// // DELETE - Remove a specific attribute by key
// app.delete("/attributes/:key", (req, res) => {
//   const { key } = req.params;

//   const index = attributesData.attributes.findIndex(
//     (item) => item.key === key
//   );

//   if (index === -1) {
//     return res
//       .status(404)
//       .json({ error: `Attribute with key '${key}' not found` });
//   }

//   // Remove the attribute
//   attributesData.attributes.splice(index, 1);

//   res.json({
//     message: "Attribute deleted successfully",
//     attributes: attributesData.attributes,
//   });
// });

// // Start the server
// app.listen(PORT, () => {
//   console.log(`Server is running on http://localhost:${PORT}`);
// });

const express = require("express");
const bodyParser = require("body-parser");

const app = express();
const PORT = 8080;

// Middleware to parse JSON
app.use(bodyParser.json());

// In-memory data store for demonstration
let attributesData = {
  attributes: [],
};

// CREATE - Add or update attributes dynamically from "activities"
// POST /activities
app.post("/activities", (req, res) => {
  console.log("POST /activities hit");
  console.log("Request Body:", req.body); // Log the entire request body

  const { activities } = req.body;

  if (!activities || typeof activities !== "object") {
    console.log("Error: Activities must be an object");
    return res.status(400).json({ error: "Activities must be an object" });
  }

  // Transform activities object into attributes array
  const attributes = Object.entries(activities).map(([key, value]) => ({
    key,
    value,
  }));

  console.log("Transformed Attributes:", attributes); // Log transformed attributes

  // Add or update attributes
  for (const attribute of attributes) {
    const existingIndex = attributesData.attributes.findIndex(
      (item) => item.key === attribute.key
    );
    if (existingIndex !== -1) {
      console.log(
        `Updating existing attribute: ${attribute.key} with value: ${attribute.value}`
      );
      attributesData.attributes[existingIndex].value = attribute.value;
    } else {
      console.log(`Adding new attribute: ${attribute.key} with value: ${attribute.value}`);
      attributesData.attributes.push(attribute);
    }
  }

  console.log("Updated Attributes Data:", attributesData.attributes); // Log updated attributes data

  res.status(201).json({
    message: "Activities processed successfully",
    attributes: attributesData.attributes,
  });
});
// READ - Get all attributes
app.get("/attributes", (req, res) => {
  res.json({
    message: "Attributes retrieved successfully",
    attributes: attributesData.attributes,
  });
});

// READ - Get a specific attribute by key
app.get("/attributes/:key", (req, res) => {
  const { key } = req.params;

  const attribute = attributesData.attributes.find(
    (item) => item.key === key
  );

  if (!attribute) {
    return res
      .status(404)
      .json({ error: `Attribute with key '${key}' not found` });
  }

  res.json({
    message: "Attribute retrieved successfully",
    attribute,
  });
});

// UPDATE - Update a specific attribute by key
app.put("/attributes/:key", (req, res) => {
  const { key } = req.params;
  const { value } = req.body;

  if (!value) {
    return res
      .status(400)
      .json({ error: "Value is required to update the attribute" });
  }

  const attribute = attributesData.attributes.find(
    (item) => item.key === key
  );

  if (!attribute) {
    return res
      .status(404)
      .json({ error: `Attribute with key '${key}' not found` });
  }

  // Update the value
  attribute.value = value;

  res.json({
    message: "Attribute updated successfully",
    attributes: attributesData.attributes,
  });
});

// DELETE - Remove a specific attribute by key
app.delete("/attributes/:key", (req, res) => {
  const { key } = req.params;

  const index = attributesData.attributes.findIndex(
    (item) => item.key === key
  );

  if (index === -1) {
    return res
      .status(404)
      .json({ error: `Attribute with key '${key}' not found` });
  }

  // Remove the attribute
  attributesData.attributes.splice(index, 1);

  res.json({
    message: "Attribute deleted successfully",
    attributes: attributesData.attributes,
  });
});

// Start the server
app.listen(PORT, () => {
  console.log(`Server is running on http://localhost:${PORT}`);
});