-- File format to read the CSV
create or replace file format frosty_csv
    type = csv
    field_delimiter = ','
    field_optionally_enclosed_by = '"'
    skip_header = 1;
    
-- Creates stage to read the CSV
create or replace stage w22_frosty_stage
  url = 's3://frostyfridaychallenges/challenge_22/'
  file_format = frosty_csv;
  
-- Roles needed for challenge
create role rep1;
create role rep2;

-- Grant roles to self for testing
grant role rep1 to user <INSERT_YOUR_USERNAME>;
grant role rep2 to user <INSERT_YOUR_USERNAME>;

-- Enable warehouse usage. Assumes that `public` has access to the warehouse
grant role public to role rep1;
grant role public to role rep2;

-- Create the table from the CSV in S3
create table <YOUR_DB_NAME>.<YOUR_SCHEMA_NAME>.week22 as
select t.$1::int id, t.$2::varchar(50) city, t.$3::int district from @w22_frosty_stage (pattern=>'.*sales_areas.*') t;

-- Code for creating the secure view
<ENTER_CODE_HERE>
    
-- Roles need DB access
grant usage on database <YOUR_DB_NAME> to role rep1;
grant usage on database <YOUR_DB_NAME> to role rep2;
-- And schema access
grant usage on schema <YOUR_DB_NAME>.challenges to role rep1;
grant usage on schema <YOUR_DB_NAME>.challenges to role rep2;
-- And usage of view
grant select on view <YOUR_DB_NAME>.<YOUR_SCHEMA_NAME>.secure_cities to role rep1;
grant select on view <YOUR_DB_NAME>.<YOUR_SCHEMA_NAME>.secure_cities to role rep2;

-- Get the result of queries
use role rep1
select * from <YOUR_DB_NAME>.<YOUR_SCHEMA_NAME>.secure_cities;

use role rep2
select * from <YOUR_DB_NAME>.<YOUR_SCHEMA_NAME>.secure_cities;