query_models_api.js

const express = require('express');
const fs = require('fs');
// Read and Parse JSON Data
const data = JSON.parse(fs.readFileSync('diffusers-unfiltered.json', 'utf8'));
const makeReadable=(data)=>{
  return data.map(item=>{
    return {
      id: item.id,
      class: item.class,
      tags: item.meta.tags|| [],
      activation_phrase: item.meta.instance_prompt || "not required",
      example_prompts:item.meta.widget || "none provided"
    }
  })
}
// Sorting Function
function sortData(data, sortBy) {
  return data.sort((a, b) => b[sortBy] - a[sortBy]);
}

// Filtering Functions
function filterData(data, filterBy, threshold=0.5) {
  return data.filter(item => item["class"][filterBy] >= threshold);
}

function filterOptimizedOnly(data) {
  data= data.filter(item => item.meta.inference)
  sortData(data, "downloads");
  return data
}

async function queryCommunityModels(req, res) {
  let result = data;

  if (req.query.sortBy) {
    result = sortData(result, req.query.sortBy);
  }

  if (req.query.filterBy && req.query.threshold) {
    result = filterData(result, req.query.filterBy,  req.query.threshold ?  
        parseFloat(req.query.threshold)
        :
        0.5
    );
  }

  if (req.query.optimized_only === 'true') {
    result = filterOptimizedOnly(result);
  }
  console.log(result.length, " items returned");
  res.json(makeReadable(result));
}

module.exports={queryCommunityModels}