using ExportMap.cs;
using ExportMap.Models;
using Npgsql;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.Linq;
using System.Reflection;
using System.Web;

namespace ExportMap.db
{
    public class PubDBHelper
    {
        private static List<string> lasList = new List<string>() { "cpt", "las", "laz" };

        private static List<string> imgList = new List<string>() { "jpg", "png", "img", "tif", "tiff" };

        private static string insertPublishSql = "insert into lf.sys_publish(name, url, path, type, status, dirid, depid, min, max, json, create_user, geom, bak) values (@name, @url, @path, @type, @status, @dirid, @depid, @min, @max, @json, @create_user, {0}, @bak) returning id";

        private static string insertMetaPubSql = "insert into lf.sys_meta_pub (metaid, pubid, create_user) select {0}, {1}, {2} from (select 1) temp where not exists (select 1 from lf.sys_meta_pub where metaid = {0} and pubid = {1})";

        // 模型-@cnName，model-@enName，自动发布模型-@name，http:// - @url，Tileset-@serve，1-@user，7-@pubid
        private static string insertLayerSql = "insert into lf.sys_layer (pid, cn_name, en_name, url, type, level, order_num, is_show, create_user, data_type, serve_type, pubid, elev) values (@pid, @cnName, @enName, @url, 2, (select coalesce(level, 0) + 1 from lf.sys_layer where id = @pid), (select coalesce(max(order_num), 0) + 1 from lf.sys_layer where pid = @pid), 0, @user, @data, @serve, @pubid, @elev)";

        private static string insertParentLayer = "insert into lf.sys_layer (pid, cn_name, en_name, type, level, order_num, is_show, create_user, data_type, is_project) values (@pid, (select name from lf.sys_dir where code = @code), @en_name, 1, (select coalesce(level, 0) + 1 from lf.sys_layer where id = @pid), (select coalesce(max(order_num), 0) + 1 from lf.sys_layer where pid = @pid), 0, @create_user, (select data_type from lf.sys_layer where id = @pid), 1) returning id";

        private static string updateMetaSql = "update lf.sys_meta set path = @path where id = @id";

        private static string selectLayerSql = "select id from lf.sys_layer where pid = @pid and en_name = @en_name";

        /// <summary>
        /// 是/否发布过 *
        /// </summary>
        public static bool IsPublish(int metaid)
        {
            string sql = "select count(*) from lf.sys_meta_pub a inner join lf.sys_publish b on a.pubid = b.id where a.metaid = " + metaid;

            object obj = Tools.DBHelper.GetScalar(sql);
            int count = obj == null ? 0 : Convert.ToInt32(obj);

            return count > 0;
        }

        /// <summary>
        /// 是/否发布过 *
        /// </summary>
        public static bool IsPublish(string dirid, string type = "DOM")
        {
            string sql = string.Format("select count(*) from lf.sys_meta_pub a inner join lf.sys_publish b on a.pubid = b.id where b.type = '{0}' and b.dirid = @dirid", type);
            DbParameter dp = new NpgsqlParameter("@dirid", dirid);

            object obj = Tools.DBHelper.GetScalar(sql, dp);
            int count = obj == null ? 0 : Convert.ToInt32(obj);

            return count > 0;
        }

        /// <summary>
        /// 获取发布ID
        /// </summary>
        public static int GetPushlishId(int metaid)
        {
            string sql = string.Format("select pubid from lf.sys_meta_pub where metaid={0} order by id desc limit 1", metaid);
            object obj = Tools.DBHelper.GetScalar(sql);

            return null == obj ? 0 : Convert.ToInt32(obj);
        }

        /// <summary>
        /// 获取发布ID
        /// </summary>
        public static int GetPushlishId(string dirid, string type = "DOM")
        {
            string sql = string.Format("select b.id from lf.sys_publish b where b.type = '{0}' and b.dirid = '{1}' limit 1", type, dirid);
            object obj = Tools.DBHelper.GetScalar(sql);

            return null == obj ? 0 : Convert.ToInt32(obj);
        }

        /// <summary>
        /// 获取已经发布的元数据ID
        /// </summary>
        public static List<int> GetPublishMetaId(int pubid)
        {
            string sql = string.Format("select metaid from lf.sys_meta_pub where pubid = {0}", pubid);
            DataTable dt = Tools.DBHelper.GetDataTable(sql);

            List<int> list = new List<int>();
            if (null == dt || 0 == dt.Rows.Count) return list;

            for (int i = 0, c = dt.Rows.Count; i < c; i++)
            {
                object obj = dt.Rows[i][0];
                if (null != obj)
                {
                    int id = 0;
                    if (int.TryParse(obj.ToString(), out id))
                    {
                        list.Add(id);
                    }
                }
            }

            return list;
        }

        /// <summary>
        /// 更新发布数据
        /// </summary>
        public static int UpdatePublish(int pubid, string name, int userId, string geom, string url = null)
        {
            string str = null == geom ? "" : string.Format(", geom={0}", geom);
            str += null == url ? "" : string.Format(", url='{0}'", url);
            string sql = string.Format("update lf.sys_publish set name=@name, update_user=@userId, update_time=now(){0} where id=@id;update lf.sys_layer set cn_name=@name where pubid=@id;", str);

            DbParameter dp1 = new NpgsqlParameter("@name", name);
            DbParameter dp2 = new NpgsqlParameter("@userId", userId);
            DbParameter dp3 = new NpgsqlParameter("@id", pubid);

            return Tools.DBHelper.ExecuteNonQuery(sql, dp1, dp2, dp3);
        }

        /// <summary>
        /// 插入元数据-数据发布表记录
        /// </summary>
        public static int InsertMetaPub(int metaid, int pubid, int userId)
        {
            string sql = string.Format(insertMetaPubSql, metaid, pubid, userId);

            return Tools.DBHelper.ExecuteNonQuery(sql);
        }

        /// <summary>
        /// 插入数据发布表记录
        /// </summary>
        public static int InsertPublish(SysPublish sys)
        {
            List<DbParameter> list = Tools.GetParams<SysPublish>(insertPublishSql, sys);
            string sql = string.Format(insertPublishSql, string.IsNullOrEmpty(sys.geom) ? "null" : sys.geom);

            object obj = Tools.DBHelper.GetScalar(sql, list.ToArray());

            return obj == null ? 0 : Convert.ToInt32(obj);
        }

        /// <summary>
        /// 插入图层表记录
        /// </summary>
        public static int InsertLayer(SysPublish sys, SysMeta meta, double elev = 0)
        {
            int pid = SelectLayerPid(sys, meta);
            //string cnName = meta.name.Split(new char[] { '.' })[0];
            int idx = meta.name.LastIndexOf(".");
            string cnName = idx == -1 ? meta.name : meta.name.Substring(0, meta.name.LastIndexOf("."));
            string data = getData(meta);
            string serve = getServe(meta);

            // @pid, @cnName, @enName, @url, @user, @data, @serve, @pubid, @elev
            List<DbParameter> list = new List<DbParameter>();
            list.Add(new NpgsqlParameter("@pid", pid));
            list.Add(new NpgsqlParameter("@cnName", cnName));
            list.Add(new NpgsqlParameter("@enName", sys.dirid));
            list.Add(new NpgsqlParameter("@url", sys.url));
            list.Add(new NpgsqlParameter("@user", sys.create_user));
            list.Add(new NpgsqlParameter("@data", data));
            list.Add(new NpgsqlParameter("@serve", serve));
            list.Add(new NpgsqlParameter("@pubid", sys.id));
            list.Add(new NpgsqlParameter("@elev", elev));

            int rows = Tools.DBHelper.ExecuteNonQuery(insertLayerSql, list.ToArray());

            return rows;
        }

        /// <summary>
        /// 获取图层数据
        /// </summary>
        private static string getData(SysMeta meta)
        {
            // "mpt".Equals(meta.type) ? "自动发布地形场景" : (imgList.Contains(meta.type) ? "自动发布影像" : "自动发布模型");

            if ("mpt".Equals(meta.type)) return "自动发布地形场景";

            if ("DEM".Equals(meta.type)) return "自动发布地形";

            if ("DOM".Equals(meta.type)) return "自动发布影像";

            return "自动发布模型";
        }

        /// <summary>
        /// 获取图层服务
        /// </summary>
        private static string getServe(SysMeta meta)
        {
            // "mpt".Equals(meta.type) ? "Mpt" : (imgList.Contains(meta.type) ? "TMS" : "Tileset");

            if ("mpt".Equals(meta.type)) return "Mpt";

            if ("DEM".Equals(meta.type)) return "DEM";

            if ("DOM".Equals(meta.type)) return "TMS";

            if ("3dml".Equals(meta.type) || "cpt".Equals(meta.type)) return "3DML";

            return "Tileset";
        }

        /// <summary>
        /// 更新元数据文件路径
        /// </summary>
        public static int UpdateMetaPath(SysMeta meta)
        {
            List<DbParameter> list = new List<DbParameter>();
            list.Add(new NpgsqlParameter("@id", meta.id));
            list.Add(new NpgsqlParameter("@path", meta.path));

            int rows = Tools.DBHelper.ExecuteNonQuery(updateMetaSql, list.ToArray());

            return rows;
        }

        /// <summary>
        /// 查询图层父节点ID
        /// </summary>
        public static int SelectLayerPid(SysPublish sys, SysMeta meta)
        {
            string sql = GetSelectLayerPidSql(meta, meta.ismeta);
            int pid = Tools.DBHelper.GetIntScalar(sql);
            string dirid = sys.dirid.Substring(0, 2);

            List<DbParameter> list = new List<DbParameter>();
            list.Add(new NpgsqlParameter("@pid", pid));
            list.Add(new NpgsqlParameter("@en_name", dirid));

            int layerId = Tools.DBHelper.GetIntScalar(selectLayerSql, list.ToArray());
            if (0 == layerId)
            {
                List<DbParameter> args = new List<DbParameter>();
                args.Add(new NpgsqlParameter("@pid", pid));
                args.Add(new NpgsqlParameter("@code", dirid));
                args.Add(new NpgsqlParameter("@en_name", dirid));
                args.Add(new NpgsqlParameter("@create_user", sys.create_user));

                layerId = Tools.DBHelper.GetIntScalar(insertParentLayer, args.ToArray());
            }

            return layerId;
        }

        /// <summary>
        /// 获取查询图层父节点ID的SQL
        /// </summary>
        public static string GetSelectLayerPidSql(SysMeta meta, int isModel)
        {
            string noneSql = "select id from lf.sys_layer where cn_name = '其他' and pid = (select id from lf.sys_layer where cn_name = '工程数据' order by pid limit 1)";

            if (string.IsNullOrWhiteSpace(meta.dirname)) return noneSql;

            if (meta.dirname.IndexOf("\\勘察") > -1)
                return "select id from lf.sys_layer where cn_name = '三维地质模型' and pid = (select id from lf.sys_layer where cn_name = '勘察' order by pid limit 1)";

            if (meta.dirname.IndexOf("\\测绘") > -1)
            {
                if (lasList.Contains(meta.type))
                    return "select id from lf.sys_layer where cn_name = '点云数据' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                if ("osgb".Equals(meta.type))
                    return "select id from lf.sys_layer where cn_name = '倾斜摄影数据' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                if ("mpt".Equals(meta.type))
                    return "select id from lf.sys_layer where cn_name = '三维地形模型' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                if ("DEM".Equals(meta.type))
                    return "select id from lf.sys_layer where cn_name = '数字高程模型' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                if ("DOM".Equals(meta.type))
                    return "select id from lf.sys_layer where cn_name = '数字正射影像图' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                else
                {
                    //return "select id from lf.sys_layer where cn_name = '单体模型' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)";
                    return string.Format("select id from lf.sys_layer where cn_name = '{0}' and pid = (select id from lf.sys_layer where cn_name = '测绘' order by pid limit 1)", isModel > 0 ? "单体模型" : "倾斜摄影数据");
                }
            }

            if (meta.dirname.IndexOf("\\地灾") > -1)
                return "select id from lf.sys_layer where cn_name = '三维地质模型' and pid = (select id from lf.sys_layer where cn_name = '地灾' order by pid limit 1)";

            if (meta.dirname.IndexOf("\\洞库") > -1)
                return "select id from lf.sys_layer where cn_name = '洞库模型' and pid = (select id from lf.sys_layer where cn_name = '洞库' order by pid limit 1)";

            return noneSql;
        }

        /// <summary>
        /// 查询发布数据
        /// </summary>
        public static List<SysPublish> SelectPublishs(List<int> ids)
        {
            string sql = string.Format("select id, name, url, path, type, status, dirid, depid, min, max, json, create_user, create_time, update_user, update_time, st_astext(geom) geom, bak from lf.sys_publish where id in ({0}) order by id desc", string.Join(",", ids));
            DataTable dt = Tools.DBHelper.GetDataTable(sql);
            List<SysPublish> list = ModelHandler.FillModel<SysPublish>(dt);

            return list;
        }

        /// <summary>
        /// 获取参数列表
        /// </summary>
        public static List<DbParameter> GetParams<T>(string sql, T t)
        {
            List<DbParameter> list = new List<DbParameter>();
            Type tType = typeof(T);
            BindingFlags flags = BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance;

            int start = sql.IndexOf("@");
            while (start != -1)
            {
                int end = sql.IndexOf(",", start);
                if (end == -1) end = sql.IndexOf(")", start);
                if (end == -1) end = sql.IndexOf(" ", start);
                if (end == -1) end = sql.Length;

                string name = sql.Substring(start + 1, end - start - 1);
                PropertyInfo pi = tType.GetProperty(name, flags);
                if (pi != null)
                {
                    object value = pi.GetValue(t, null);
                    DbParameter dp = new NpgsqlParameter("@" + name, value);
                    list.Add(dp);
                }

                start = sql.IndexOf("@", end);
            }

            return list;
        }
    }
}