using Simple.OData.Client;

namespace JSONParser.Structure
{
    public class Employee : Entity
    {
        public Person Person { get; set; }
        public Login Login { get; set; }
        public string Email { get; set; }
        public Department Department { get; set; }
        public JobTitle JobTitle { get; set; }
        public string JobTitleName { get; set; }
        public bool Status { get; set; }

        public override string ToString()
        {
            if (Person != null)
            {
                var fullname = $"{Person.LastName} {Person.FirstName}";
                if (!string.IsNullOrEmpty(Person.MiddleName))
                {
                    fullname += $" {Person.MiddleName}";
                }
                return fullname;
            }
            return base.ToString();
        }

        public async Task<long> FindByLogin(ODataClient client)
        {
            if (Login == null) return 0;
            var byLogin = await client
                .For("IEmployees")
                .Expand("Login")
                .Filter($"tolower(Login/LoginName) eq '{Login.LoginName?.ToLower()}'")
                .FindEntryAsync();
            if (byLogin == null) return 0;
            return (long)byLogin["Id"];
        }

        public async override Task<long> Create(ODataClient client)
        {
            var newEmployee = new
            {
                ExternalId = Sid,
                Person = new { Id = Person.DirectumId },
                Department = new { Id = Department.DirectumId },
                JobTitle = new { Id = JobTitle.DirectumId },
                Login = new { Id = Login == null ? 0 : Login.DirectumId },
                Email = Email,
                NeedNotifyExpiredAssignments = false,
                NeedNotifyNewAssignments = false,
                NeedNotifyAssignmentsSummary = false,
                Status = "Active"
            };
            var created = await client
                .For("IEmployees")
                .Set(newEmployee)
                .InsertEntryAsync();

            this.DirectumId = (long)created["Id"];
            return (long)created["Id"];
        }

        public async override Task<long> Update(ODataClient client, long id)
        {
            var newEmployee = new
            {
                ExternalId = Sid,
                Person = new { Id = Person.DirectumId },
                Department = new { Id = Department.DirectumId },
                JobTitle = new { Id = JobTitle.DirectumId },
                Login = new { Id = Login == null ? 0 : Login.DirectumId },
                Email = Email,
                NeedNotifyExpiredAssignments = false,
                NeedNotifyNewAssignments = false,
                NeedNotifyAssignmentsSummary = false,
                Status = Status ? "Active" : "Closed"
            };
            var updated = await client
                .For("IEmployees")
                .Key(id)
                .Set(newEmployee)
                .UpdateEntryAsync();
            this.DirectumId = (long)updated["Id"];
            return (long)updated["Id"];
        }

        public async Task CloseRecord(ODataClient client, long id)
        {
            var update = new { Login = new { Id = 0 }, Status = "Closed" };
            await client
                .For("IEmployees")
                .Key(id)
                .Set(update)
                .UpdateEntryAsync();
        }

        internal bool IsEqual(IDictionary<string, dynamic>? emp)
        {
            bool result = false;
            long? personId = null;
            long? loginId = null;
            long? departmentId = null;
            long? jobTitleId = null;
            bool status = false;

            if (emp["Person"] != null)
            {
                personId = emp["Person"]["Id"];
            }
            if (emp["Login"] != null)
            {
                loginId = emp["Login"]["Id"];
            }
            if (emp["Department"] != null)
            {
                departmentId = emp["Department"]["Id"];
            }
            if (emp["JobTitle"] != null)
            {
                jobTitleId = emp["JobTitle"]["Id"];
            }
            if (emp["Status"] != null)
            {
                status = emp["Status"] == "Active" ? true : false;
            }
            if (Person?.DirectumId == personId &&
                Login?.DirectumId == loginId &&
                Email == (string)emp["Email"] &&
                Department?.DirectumId == departmentId &&
                JobTitle?.DirectumId == jobTitleId &&
                Status == status)
            {
                result = true;
            }

            return result;
        }

        public async Task<long> TryFindBySid(ODataClient client)
        {
            long result = 0;
            var employee = await client
                .For("IEmployees")
                .Filter($"ExternalId eq '{Sid}' and Status eq 'Active'")
                .FindEntryAsync();
            if (employee != null)
            {
                result = (long)employee["Id"];
            }
            return result;
        }
    }
}