nestjs rewrite
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popovspiridon99
250
server/src/general/general.service.ts
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250
server/src/general/general.service.ts
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import { Injectable } from '@nestjs/common';
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import { InjectDataSource } from '@nestjs/typeorm';
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import { DataSource } from 'typeorm';
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@Injectable()
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export class GeneralService {
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constructor(
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@InjectDataSource('emsConnection')
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private dataSource: DataSource
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) { }
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async getRegions(): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..vRegions;
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`)
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return result
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}
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async getDistricts(region_id: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT c.*, d.name AS district_name
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FROM ${generalDatabase}..vCities c
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JOIN ${generalDatabase}..vDistricts d ON d.id_region = c.id_region AND d.id = c.id_district
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WHERE c.id_region = ${region_id};
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`)
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return result
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}
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async getCities(offset?: number, limit?: number, search?: string, id?: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..Cities
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${id ? `WHERE id = ${id}` : ''}
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${search ? `WHERE name LIKE '%${search || ''}%'` : ''}
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ORDER BY id
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OFFSET ${Number(offset) || 0} ROWS
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FETCH NEXT ${Number(limit) || 10} ROWS ONLY;
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`)
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return result
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}
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async getTypes(): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..tTypes
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ORDER BY id
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`)
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return result
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}
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async getObjects(offset?: number, limit?: number, city_id?: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..vObjects
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${city_id ? `WHERE id_city = ${Number(city_id)}` : ''}
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ORDER BY id_object
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OFFSET ${Number(offset) || 0} ROWS
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FETCH NEXT ${Number(limit) || 10} ROWS ONLY;
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`)
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return result
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}
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// TODO: GisDB
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async getObjectsList(city_id: number, year: number, planning: number, type?: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const gisDatabase = 'New_Gis'
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const result = await this.dataSource.query(type ? `
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WITH cte_split(type_id, split_value, caption_params) AS
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(
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-- anchor member
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SELECT DISTINCT
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type_id,
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CAST(LEFT(caption_params, CHARINDEX(',', caption_params + ',') - 1) AS VARCHAR(255)), -- Explicitly casting to VARCHAR
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STUFF(caption_params, 1, CHARINDEX(',', caption_params + ','), '')
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FROM ${gisDatabase}..caption_params
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WHERE city_id = -1 AND user_id = -1
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UNION ALL
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-- recursive member
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SELECT
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type_id,
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CAST(LEFT(caption_params, CHARINDEX(',', caption_params + ',') - 1) AS VARCHAR(255)), -- Explicitly casting to VARCHAR
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STUFF(caption_params, 1, CHARINDEX(',', caption_params + ','), '')
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FROM cte_split
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WHERE caption_params > ''
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)
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SELECT
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o.object_id,
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o.type,
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o.id_city,
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o.year,
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o.planning,
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string_agg(cast(v.value as varchar), ',') as caption
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FROM ${generalDatabase}..vObjects o
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JOIN cte_split c ON o.type = c.type_id
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JOIN ${generalDatabase}..tParameters p ON p.id = split_value
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LEFT JOIN ${generalDatabase}..tValues v
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ON
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v.id_param = split_value
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AND v.id_object = o.object_id
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AND (v.date_po IS NULL)
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AND (v.date_s < DATEFROMPARTS(${Number(year) + 1},01,01))
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WHERE
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o.id_city = ${city_id}
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AND o.year = ${year}
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AND o.type = ${type}
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AND
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(
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CASE
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WHEN TRY_CAST(o.planning AS BIT) IS NOT NULL THEN TRY_CAST(o.planning AS BIT)
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WHEN o.planning = 'TRUE' THEN 1
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WHEN o.planning = 'FALSE' THEN 0
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ELSE NULL
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END
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) = ${planning}
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GROUP BY object_id, type, id_city, year, planning;
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`:
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`
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SELECT
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${generalDatabase}..tTypes.id AS id,
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${generalDatabase}..tTypes.name AS name,
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COUNT(vo.type) AS count,
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tr.r,
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tr.g,
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tr.b
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FROM
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${generalDatabase}..vObjects vo
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JOIN
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${generalDatabase}..tTypes ON vo.type = ${generalDatabase}..tTypes.id
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LEFT JOIN ${gisDatabase}..TypeRoles tr ON tr.id = ${generalDatabase}..tTypes.id
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WHERE
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vo.id_city = ${city_id} AND vo.year = ${year}
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AND
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(
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CASE
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WHEN TRY_CAST(vo.planning AS BIT) IS NOT NULL THEN TRY_CAST(vo.planning AS BIT)
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WHEN vo.planning = 'TRUE' THEN 1
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WHEN vo.planning = 'FALSE' THEN 0
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ELSE NULL
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END
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) = ${planning}
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GROUP BY
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${generalDatabase}..tTypes.id,
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${generalDatabase}..tTypes.name,
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tr.r,
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tr.g,
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tr.b;
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`
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)
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return result
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}
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async getObjectById(id: string): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const gisDatabase = 'New_Gis'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..vObjects
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WHERE id_object = '${id}'
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`)
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return result
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}
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async getValuesByObjectId(object_id: string): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT id_object, id_param, CAST(v.value AS varchar(max)) AS value,
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date_s,
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date_po,
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id_user
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FROM ${generalDatabase}..tValues v
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JOIN ${generalDatabase}..tParameters p ON v.id_param = p.id
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WHERE id_object = '${object_id}'
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`)
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return result
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}
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async getParamsById(param_id: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const result = await this.dataSource.query(`
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SELECT * FROM ${generalDatabase}..TParameters
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WHERE id = '${param_id}'
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`)
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return result
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}
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tcbParamQuery = (vtable: string, id_city: number) => {
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const generalDatabase = 'nGeneral'
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switch (vtable) {
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case 'vStreets':
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return `SELECT * FROM ${generalDatabase}..${vtable} WHERE id_city = ${id_city};`
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case 'vBoilers':
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return `SELECT * FROM ${generalDatabase}..${vtable} WHERE id_city = ${id_city};`
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default:
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return `SELECT * FROM ${generalDatabase}..${vtable};`
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}
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}
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async getTCBParams(vtable: string, id_city: number, id?: number): Promise<any[]> {
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const generalDatabase = 'nGeneral'
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const query = id ? `
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SELECT * FROM ${generalDatabase}..${vtable} WHERE id = '${id}'
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` : this.tcbParamQuery(vtable, id_city)
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const result = await this.dataSource.query(query)
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return result
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}
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async getSearchObjects(q: string, id_city: number, year: number) {
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const generalDatabase = 'nGeneral'
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const gisDatabase = 'New_Gis'
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const result = await this.dataSource.query(`
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WITH RankedValues AS (
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SELECT
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id_object,
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date_s,
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CAST(value AS varchar(max)) AS value,
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ROW_NUMBER() OVER (PARTITION BY id_object ORDER BY date_s DESC) AS rn,
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o.id_city AS id_city,
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o.year AS year
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FROM ${generalDatabase}..tValues
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JOIN ${generalDatabase}..tObjects o ON o.id = id_object
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WHERE CAST(value AS varchar(max)) LIKE '%${q}%'
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)
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SELECT
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id_object,
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date_s,
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value,
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id_city,
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year
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FROM RankedValues
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WHERE rn = 1 AND id_city = ${id_city} AND year = ${year};
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`)
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return result
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}
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}
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