/**
 * Integration tests for multi-sig approval flow
 */

import { validateAddress } from "../../utils/security";

describe("Multi-Sig Approval Integration Tests", () => {
  describe("Approval Flow", () => {
    it("should require threshold approvals before execution", () => {
      const threshold = 2;
      const owners = [
        "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
        "0x8ba1f109551bD432803012645Hac136c22C9e8",
        "0x9ba1f109551bD432803012645Hac136c22C9e9",
      ];
      const approvals: Array<{ approver: string; approved: boolean; timestamp: number }> = [];

      // First approval
      const approver1 = owners[0];
      const validation1 = validateAddress(approver1);
      expect(validation1.valid).toBe(true);
      
      approvals.push({
        approver: validation1.checksummed!,
        approved: true,
        timestamp: Date.now(),
      });

      expect(approvals.filter(a => a.approved).length).toBe(1);
      expect(approvals.filter(a => a.approved).length).toBeLessThan(threshold);

      // Second approval
      const approver2 = owners[1];
      const validation2 = validateAddress(approver2);
      expect(validation2.valid).toBe(true);
      
      approvals.push({
        approver: validation2.checksummed!,
        approved: true,
        timestamp: Date.now(),
      });

      expect(approvals.filter(a => a.approved).length).toBe(2);
      expect(approvals.filter(a => a.approved).length).toBeGreaterThanOrEqual(threshold);
    });

    it("should verify approver is a wallet owner", () => {
      const owners = [
        "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
        "0x8ba1f109551bD432803012645Hac136c22C9e8",
      ];
      const approver = "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb";
      const unauthorizedApprover = "0x9ba1f109551bD432803012645Hac136c22C9e9";

      // Valid approver
      const isOwner1 = owners.some(
        o => o.toLowerCase() === approver.toLowerCase()
      );
      expect(isOwner1).toBe(true);

      // Invalid approver
      const isOwner2 = owners.some(
        o => o.toLowerCase() === unauthorizedApprover.toLowerCase()
      );
      expect(isOwner2).toBe(false);
    });

    it("should prevent duplicate approvals from same owner", () => {
      const approver = "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb";
      const approvals: Array<{ approver: string; approved: boolean }> = [];

      // First approval
      approvals.push({ approver, approved: true });

      // Check for duplicate
      const alreadyApproved = approvals.some(
        a => a.approver.toLowerCase() === approver.toLowerCase() && a.approved
      );
      expect(alreadyApproved).toBe(true);

      // Should not allow duplicate approval
      if (alreadyApproved) {
        // In real implementation, this would throw an error
        expect(true).toBe(true);
      }
    });

    it("should handle mixed approvals and rejections", () => {
      const owners = [
        "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb",
        "0x8ba1f109551bD432803012645Hac136c22C9e8",
        "0x9ba1f109551bD432803012645Hac136c22C9e9",
      ];
      const threshold = 2;
      const approvals: Array<{ approver: string; approved: boolean }> = [];

      // First approval
      approvals.push({ approver: owners[0], approved: true });
      expect(approvals.filter(a => a.approved).length).toBe(1);

      // Second rejection
      approvals.push({ approver: owners[1], approved: false });
      expect(approvals.filter(a => a.approved).length).toBe(1);

      // Third approval
      approvals.push({ approver: owners[2], approved: true });
      expect(approvals.filter(a => a.approved).length).toBe(2);
      expect(approvals.filter(a => a.approved).length).toBeGreaterThanOrEqual(threshold);
    });
  });

  describe("Race Condition Prevention", () => {
    it("should prevent concurrent approvals with locks", () => {
      const transactionId = "tx_123";
      const locks = new Map<string, boolean>();

      // Simulate concurrent approval attempts
      const attempt1 = () => {
        if (locks.get(transactionId)) {
          return false; // Locked
        }
        locks.set(transactionId, true);
        return true;
      };

      const attempt2 = () => {
        if (locks.get(transactionId)) {
          return false; // Locked
        }
        locks.set(transactionId, true);
        return true;
      };

      // First attempt succeeds
      expect(attempt1()).toBe(true);

      // Second attempt fails (locked)
      expect(attempt2()).toBe(false);

      // Release lock
      locks.delete(transactionId);

      // Now second attempt can succeed
      expect(attempt2()).toBe(true);
    });

    it("should handle approval order correctly", () => {
      const approvals: Array<{ approver: string; timestamp: number }> = [];
      const threshold = 2;

      // Simulate rapid approvals
      const approver1 = "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb";
      const approver2 = "0x8ba1f109551bD432803012645Hac136c22C9e8";

      approvals.push({ approver: approver1, timestamp: Date.now() });
      approvals.push({ approver: approver2, timestamp: Date.now() + 1 });

      // Should maintain order
      expect(approvals.length).toBe(2);
      expect(approvals[0].approver).toBe(approver1);
      expect(approvals[1].approver).toBe(approver2);
    });
  });

  describe("Threshold Validation", () => {
    it("should validate threshold before allowing execution", () => {
      const threshold = 2;
      const approvals = [
        { approver: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb", approved: true },
        { approver: "0x8ba1f109551bD432803012645Hac136c22C9e8", approved: true },
      ];

      const approvalCount = approvals.filter(a => a.approved).length;
      expect(approvalCount).toBeGreaterThanOrEqual(threshold);
    });

    it("should reject execution with insufficient approvals", () => {
      const threshold = 2;
      const approvals = [
        { approver: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb", approved: true },
      ];

      const approvalCount = approvals.filter(a => a.approved).length;
      expect(approvalCount).toBeLessThan(threshold);
    });

    it("should allow execution with exact threshold", () => {
      const threshold = 2;
      const approvals = [
        { approver: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb", approved: true },
        { approver: "0x8ba1f109551bD432803012645Hac136c22C9e8", approved: true },
      ];

      const approvalCount = approvals.filter(a => a.approved).length;
      expect(approvalCount).toBe(threshold);
    });

    it("should allow execution with more than threshold", () => {
      const threshold = 2;
      const approvals = [
        { approver: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb", approved: true },
        { approver: "0x8ba1f109551bD432803012645Hac136c22C9e8", approved: true },
        { approver: "0x9ba1f109551bD432803012645Hac136c22C9e9", approved: true },
      ];

      const approvalCount = approvals.filter(a => a.approved).length;
      expect(approvalCount).toBeGreaterThan(threshold);
    });
  });
});