using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Migrations;
using line_gestao_api.Data;

#nullable disable

namespace line_gestao_api.Migrations
{
    [DbContext(typeof(AppDbContext))]
    [Migration("20260226130200_BackfillTenantsFromDistinctMobileLinesCliente")]
    public partial class BackfillTenantsFromDistinctMobileLinesCliente : Migration
    {
        protected override void Up(MigrationBuilder migrationBuilder)
        {
            migrationBuilder.Sql("""
                DO $$
                BEGIN
                    IF EXISTS (
                        SELECT 1
                        FROM "MobileLines"
                        WHERE "Cliente" IS NULL OR btrim("Cliente") = ''
                    ) THEN
                        RAISE EXCEPTION 'Backfill abortado: MobileLines.Cliente possui valores NULL/vazios. Corrija os dados antes de migrar.';
                    END IF;
                END
                $$;
                """);

            migrationBuilder.Sql("""CREATE EXTENSION IF NOT EXISTS pgcrypto;""");

            migrationBuilder.Sql("""
                INSERT INTO "Tenants" (
                    "Id",
                    "NomeOficial",
                    "IsSystem",
                    "Ativo",
                    "SourceType",
                    "SourceKey",
                    "CreatedAt"
                )
                SELECT
                    gen_random_uuid(),
                    src."Cliente",
                    FALSE,
                    TRUE,
                    'MobileLines.Cliente',
                    src."Cliente",
                    NOW()
                FROM (
                    SELECT DISTINCT "Cliente"
                    FROM "MobileLines"
                ) src
                LEFT JOIN "Tenants" t
                    ON t."SourceType" = 'MobileLines.Cliente'
                   AND t."SourceKey" = src."Cliente"
                WHERE t."Id" IS NULL;
                """);

            migrationBuilder.Sql("""
                UPDATE "Tenants"
                SET "NomeOficial" = "SourceKey",
                    "IsSystem" = FALSE,
                    "Ativo" = TRUE
                WHERE "SourceType" = 'MobileLines.Cliente'
                  AND "SourceKey" IS NOT NULL;
                """);
        }

        protected override void Down(MigrationBuilder migrationBuilder)
        {
            // No-op intencional. Evita remover tenants já em uso.
        }
    }
}