import dotenv from "dotenv";
dotenv.config();
import mongoose from "mongoose";

const TaskSchema = new mongoose.Schema(
  {
    taskId: {
      type: String,
      unique: true,
      required: true,
    },
    task: {
      type: String,
      required: true,
      enum: ["Visit RD/PD", "Update Sales Data", "Update Inventory Data", "Collect KYC"],
    },
    note: {
      type: String,
      required: function () {
        return this.task === "Collect KYC" || this.task === "Visit RD/PD";
      },
    },
    taskStatus: {
      type: String,
      required: true,
      enum: ["New", "Pending", "Completed"],
      default: "New",
    },
    taskPriority: {
      type: String,
      required: true,
      enum: ["Low", "Medium", "High"],
    },
    taskDueDate: {
      type: String,
      required: true,
      match: /^\d{2}\/\d{2}\/\d{4}$/, // e.g., "DD/MM/YYYY"
    },
    taskAssignedTo: {
      type: mongoose.Schema.Types.ObjectId,
      ref: "SalesCoOrdinator",
      required: true,
    },
    taskAssignedBy: {
      type: mongoose.Schema.Types.ObjectId,
      ref: "TerritoryManager",
      required: true,
    },
    addedFor: {
      type: String,
      enum: ['PrincipalDistributor', 'RetailDistributor'],
      required: function () {
        return this.task === "Update Inventory Data";
      },
    },
    addedForId: {
      type: mongoose.Schema.Types.ObjectId,
      refPath: 'addedFor',
      required: function () {
        return this.task === "Update Inventory Data";
      },
    },
    tradename: {
      type: String,
      required: function () {
        return this.task === "Update Inventory Data";
      },
    },
  },
  { timestamps: true }
);

// Middleware to update task status based on due date
TaskSchema.pre("save", function (next) {
  const currentDate = new Date();
  const [day, month, year] = this.taskDueDate.split("/").map(Number);
  const dueDate = new Date(year, month - 1, day);

  // Convert dates to the start of the day for comparison
  const currentDateOnly = new Date(currentDate.setHours(0, 0, 0, 0));
  const dueDateOnly = new Date(dueDate.setHours(0, 0, 0, 0));

  // Check if the current date is after the due date
  if (currentDateOnly > dueDateOnly && this.taskStatus === "New") {
    this.taskStatus = "Pending";
  }
  
  next();
});


const Task = mongoose.model("Task", TaskSchema);

export default Task;