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/**
 * Transform Request Model
 * Represents requests from processors to buy raw materials and produce by-products
 */
import mongoose from "mongoose";

const transformRequestSchema = new mongoose.Schema(
  {
    processorId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: "Processor",
      required: true,
      index: true,
    },
    listingId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: "Listing",
    },
    sellerId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: "User",
    },
    requestType: {
      type: String,
      enum: ["spot_purchase", "contract_farming", "toll_processing", "buyback"],
      required: true,
    },
    rawMaterial: {
      productType: {
        type: String,
        required: true,
      },
      quantityKg: {
        type: Number,
        required: true,
        min: 0,
      },
      grade: String,
      pricePerKg: Number,
    },
    expectedOutput: [
      {
        productType: String,
        expectedQuantityKg: Number,
        expectedGrade: String,
      },
    ],
    processingFee: {
      amount: Number,
      currency: {
        type: String,
        default: "INR",
      },
      per: {
        type: String,
        enum: ["kg", "quintal", "ton", "batch"],
        default: "kg",
      },
    },
    timeline: {
      requestedDeliveryDate: Date,
      estimatedProcessingDays: Number,
      expectedCompletionDate: Date,
    },
    terms: {
      paymentMode: {
        type: String,
        enum: ["advance", "on_delivery", "credit", "escrow"],
        default: "escrow",
      },
      advancePercentage: Number,
      qualityStandards: String,
      penaltyClause: String,
    },
    status: {
      type: String,
      enum: [
        "pending",
        "accepted",
        "rejected",
        "in_progress",
        "completed",
        "cancelled",
        "disputed",
      ],
      default: "pending",
      index: true,
    },
    messages: [
      {
        senderId: mongoose.Schema.Types.ObjectId,
        message: String,
        createdAt: {
          type: Date,
          default: Date.now,
        },
      },
    ],
    completionDetails: {
      actualOutputQuantity: Number,
      qualityReport: String,
      deliveryDate: Date,
      invoiceNumber: String,
      invoiceUrl: String,
    },
  },
  {
    timestamps: true,
  }
);

// Indexes
transformRequestSchema.index({ processorId: 1, status: 1 });
transformRequestSchema.index({ sellerId: 1, status: 1 });

const TransformRequest = mongoose.model("TransformRequest", transformRequestSchema);

export default TransformRequest;