using System;
using System.Collections.Generic;
using System.ComponentModel.Design;
using System.Linq;

namespace SQLiteRepository
{
    internal static class SQLiteProcedures
    {
        public const string GET_LOGS_IN_LAST_X_MINUTES =
            "select * from " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.SwipeEventDateTime) + " > ? AND " +
            nameof(TimeLogDb.UserId_FK) + "=?";

        public const string GET_TIMELOGS =
            "select * from " + nameof(TimeLogDb) + " where (" + nameof(TimeLogDb.UserId_FK) + "=? AND " +
            nameof(TimeLogDb.CalendarWeek) + "=? and " + nameof(TimeLogDb.Year) + "=?)";

        public const string GET_ALL_USERS =
            "select * from " + nameof(UserIdentity) + " ut " 
            + "where "
            + "EXISTS( select " + nameof(GroupDb.GroupId)
                    + " from " + nameof(GroupDb)
                    + " where " + nameof(GroupDb.GroupName) + " = 'Archived') AND "
            + "NOT EXISTS( select * from " + nameof(UserGroupJoinDb) + " ugp where " 
                + nameof(UserGroupJoinDb.UserId_FK) + " = ut.Id"
                + " and " + nameof(UserGroupJoinDb.GroupId_FK) + " = ( "
                        + "select " + nameof(GroupDb.GroupId)
                        + " from " + nameof(GroupDb)
                        + " where " + nameof(GroupDb.GroupName) + " = 'Archived') )"
            + "order by "
            + nameof(UserIdentity.LastName) + " collate nocase, " 
            + nameof(UserIdentity.FirstName) + " collate nocase";

        public const string GET_ALL_USERS_PAGINATE =
            "select * from " + nameof(UserIdentity) + " ut "
            + "where " 
            + "EXISTS( select " + nameof(GroupDb.GroupId) 
                    + " from " + nameof(GroupDb) 
                    + " where " + nameof(GroupDb.GroupName) + " = 'Archived') AND "
            + "NOT EXISTS( select * from " + nameof(UserGroupJoinDb) + " ugp where "
                + nameof(UserGroupJoinDb.UserId_FK) + " = ut.Id"
                + " and " + nameof(UserGroupJoinDb.GroupId_FK) + " = ( "
                        + "select " + nameof(GroupDb.GroupId)
                        + " from " + nameof(GroupDb)
                        + " where " + nameof(GroupDb.GroupName) + " = 'Archived') )"
            + "order by "
            + nameof(UserIdentity.LastName) + " collate nocase, " 
            + nameof(UserIdentity.FirstName) + " collate nocase " 
            + "limit ? offset ?";

        public const string GET_ALL_USERS_BY_GROUP =
            "select u." + nameof(UserIdentity.Id) + ", u." + nameof(UserIdentity.FirstName) + ", u." +
            nameof(UserIdentity.LastName) + ", u." + nameof(UserIdentity.HoursPerWeek) + ", u." +
            nameof(UserIdentity.IsContractor) + " from " + nameof(UserIdentity) + " u left join " +
            nameof(UserGroupJoinDb) + " ugj on ugj." + nameof(UserGroupJoinDb.UserId_FK) + " = u." +
            nameof(UserIdentity.Id) + " where ugj." + nameof(UserGroupJoinDb.GroupId_FK) + "=? order by u." +
            nameof(UserIdentity.LastName) + " collate nocase, u." + nameof(UserIdentity.LastName) + " collate nocase";

        public const string GET_USER_BY_ID =
            "select * from " + nameof(UserIdentity) + " where " + nameof(UserIdentity.Id) + "=?";

        public const string GET_CARDS_BY_USER_ID =
            "select * from " + nameof(CardUniqueId) + " where " + nameof(CardUniqueId.UserId_FK) + "=?";

        public const string GET_CARDS_BY_UNIQUE_ID =
            "select * from " + nameof(CardUniqueId) + " where " + nameof(CardUniqueId.CardUId) + "=?";

        public const string GET_CARDS_BY_UNIQUE_ID_LIST =
            "select * from " + nameof(CardUniqueId) + " where " + nameof(CardUniqueId.CardUId) + " in (#IN#)";

        public const string GET_UNASSIGNED_CARD_LIST =
            "select * from " + nameof(CardUniqueId) + " where " + nameof(CardUniqueId.UserId_FK) + "=?";

        public const string CLEAR_UNASSIGNED_CARDS = 
            "delete from " + nameof(CardUniqueId) + " where " + nameof(CardUniqueId.UserId_FK) + "=?";

        public const string UPDATE_CARD_USER_ID =
            "update " + nameof(CardUniqueId) + " set " + nameof(CardUniqueId.UserId_FK) + "=? where " +
            nameof(CardUniqueId.Id) + "=?";

        public const string UPDATE_CARD_LAST_USED =
            "update " + nameof(CardUniqueId) + " set " + nameof(CardUniqueId.LastUsed) + " = ? where " +
            nameof(CardUniqueId.Id) + " = ?";

        public const string UPDATE_USER_DETAILS =
            "update " + nameof(UserIdentity) + " set " + nameof(UserIdentity.FirstName) + "=?, " +
            nameof(UserIdentity.LastName) + "=?, " + nameof(UserIdentity.HoursPerWeek) + "=?," +
            nameof(UserIdentity.IsContractor) + "=? where " + nameof(UserIdentity.Id) + "=?";

        public const string SEARCH_USER_LIST =
            "SELECT * FROM " + nameof(UserIdentity) + " where(" + nameof(UserIdentity.FirstName) + " Like ? OR " +
            nameof(UserIdentity.LastName) + " Like ?)";

        public const string GET_LAST_TIMELOG_DIRECTION =
            "SELECT * FROM " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.UserId_FK) + " = ? order by " +
            nameof(TimeLogDb.SwipeEventDateTime) + " desc LIMIT 1";

        public const string GET_TOTAL_USER_COUNT =
            "select Max(" + nameof(UserIdentity.Id) + ") from " + nameof(UserIdentity);

        public const string GET_USER_CONTRACTED_HOURS =
            "select " + nameof(UserIdentity.HoursPerWeek) + " From UserIdentity where " + nameof(UserIdentity.Id) + "=?";

        public const string GET_GROUPS = "select gp."+ nameof(GroupDb.GroupId)+ ", gp."+nameof(GroupDb.GroupName)+", " +
                                         "sum(case when gp." + nameof(GroupDb.GroupId) + " = ujdb." + nameof(UserGroupJoinDb.GroupId_FK) + " then 1 else 0 end) as " + nameof(GroupDb.AssignedUserCount) +
                                         " from " + nameof(GroupDb) + " gp" +
                                         " left join " + nameof(UserGroupJoinDb) + " ujdb " +
                                         "on ujdb." + nameof(UserGroupJoinDb.GroupId_FK) + " = gp." + nameof(GroupDb.GroupId) +
                                         " group by gp." + nameof(GroupDb.GroupId);

        public const string GET_GROUPS_FOR_USER = "select gdb." + nameof(GroupDb.GroupId) + ", gdb." + nameof(GroupDb.GroupName) + ", gdb." + nameof(GroupDb.AssignedUserCount) + "" +
                                                  " from " + nameof(GroupDb) + " gdb" +
                                                  " left join " + nameof(UserGroupJoinDb) + " ujdb" +
                                                  " on gdb." + nameof(GroupDb.GroupId) + " = ujdb." + nameof(UserGroupJoinDb.GroupId_FK) +
                                                  " where ujdb." + nameof(UserGroupJoinDb.UserId_FK) + " = ?";

        public const string GET_GROUP_BY_ID =
            "select * from " + nameof(GroupDb) + " where " + nameof(GroupDb.GroupId) + " =?";

        public const string UPDATE_GROUP = "update " + nameof(GroupDb) + " set " + nameof(GroupDb.GroupName) +
                                           "=? where " + nameof(GroupDb.GroupId) + "=?";

        public const string GET_GROUP_BY_NAME =
            "select 1 from " + nameof(GroupDb)+" where "+nameof(GroupDb.GroupName)+"= ?";

        public const string GET_TIMELOG_ENTRY =
            "select * from " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.Id) + "=?";

        public const string DELETE_TIMELOG_ENTRY =
            "delete from " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.Id) + "=?";

        public const string DELETE_TIMELOG_ENTRIES = 
            "delete from " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.Id) + "in (#IN#)";

        public const string UPDATE_TIMELOG_ENTRY = "update " + nameof(TimeLogDb) 
                                                       + " set " + nameof(TimeLogDb.UserId_FK) + "=?, " 
                                                       + nameof(TimeLogDb.Direction) + "=?," 
                                                       + nameof(TimeLogDb.SwipeEventDateTime) + "=?," 
                                                       + nameof(TimeLogDb.CalendarWeek) + "=?," 
                                                       + nameof(TimeLogDb.Year) + "=?," 
                                                       + nameof(TimeLogDb.Source) + "=? "
                                                       + "where " + nameof(TimeLogDb.Id) + "=?";

        public const string GET_DB_VERSION = "select * from " + nameof(DbVersion);

        /// <summary>
        /// This works on the tokenisation of the query string.
        /// where the list of params is to be inserted, the query should have #IN#
        /// </summary>
        /// <param name="query">the query to add the list of parameters to</param>
        /// <param name="args">the parameters to add to the query.</param>
        /// <returns></returns>
        public static string FormatInQuery(string query, List<string> args)
        {
            if (!query.Contains("#IN#"))
            {
                throw new ArgumentException("query doesnt contain any #IN# tokenisation");
            }
            //Convert to a comma separated list e.g.: val1,val2,val3
            //but we need to use string.. so.. enclose in single quotes 'val1','val2'..etc
            var argsFormatted = string.Join(",", args.Select(x=>$"'{x}'")); 

            return query.Replace("#IN#", argsFormatted);
        }
    }
}