adjust get results function in generate stats to check for missing usernames

Author: Hagellach37

mapswipe_workers/mapswipe_workers/generate_stats/project_stats.py

@@ -112,7 +112,14 @@ def get_results(filename: str, project_id: str) -> pd.DataFrame:
                 ms.start_time,
                 ms.end_time,
                 msr.result,
-                U.username
+                -- the username for users which login to MapSwipe with their
+                -- OSM account is not defined or ''.
+                -- We capture this here as it will cause problems
+                -- for the user stats generation.
+                CASE
+                    WHEN U.username IS NULL or U.username = '' THEN 'unknown'
+                    ELSE U.username
+                END as username
             FROM mapping_sessions_results msr
             LEFT JOIN mapping_sessions ms ON
                 ms.mapping_session_id = msr.mapping_session_id

mapswipe_workers/tests/readme.md

@@ -27,7 +27,7 @@ You can extract the data into csv files like this. Make sure to adjust the where
 	where
 		project_id = '-NFNr55R_LYJvxP7wmte'
 		and group_id in ('g101', 'g102', 'g103', 'g104', 'g105', 'g106', 'g107', 'g108', 'g109' )
-) to 'test_groups.csv' delimiter E'\t' NULL '\N' cs
+) to 'test_groups.csv' delimiter E'\t' NULL '\N' csv
 ```
 
 ```
@@ -36,7 +36,7 @@ You can extract the data into csv files like this. Make sure to adjust the where
 	where
 		project_id = '-NFNr55R_LYJvxP7wmte'
 		and group_id in ('g101', 'g102', 'g103', 'g104', 'g105', 'g106', 'g107', 'g108', 'g109' )
-) to 'test_tasks.csv' delimiter E'\t' csv
+) to 'test_tasks.csv' delimiter E'\t'  NULL '\N' csv
 ```
 
 These 3 tables contain a column in json format. When exporting this into a csv file there is an issue with the quotes, which prevents us from importing the csv file correctly into the test database. Hence you need to adjust the quotes manually in the csv file.
@@ -46,12 +46,14 @@ These 3 tables contain a column in json format. When exporting this into a csv f
 * hit enter, then do the same with the second command: `%s/""/"/g` (it's a search/replace expression, like sed, :%s/thing_to_search/repalcement/g)
 * save with `:w` for (write) and quit with `:q`
 
+* for the projects file make sure to check if there is no unwanted line break in the csv file.
+
 ```
 \copy (
 	select * from mapping_sessions ms
 	where project_id = '-NFNr55R_LYJvxP7wmte'
 	and group_id in ('g101', 'g102', 'g103', 'g104', 'g105', 'g106', 'g107', 'g108', 'g109' )
-) to 'test_mapping_sessions.csv' delimiter E'\t' csv
+) to 'test_mapping_sessions.csv' delimiter E'\t'  NULL '\N' csv
 ```
 
 ```
@@ -61,7 +63,7 @@ These 3 tables contain a column in json format. When exporting this into a csv f
 	where
 		ms.project_id = '-NFNr55R_LYJvxP7wmte'
 		and group_id in ('g101', 'g102', 'g103', 'g104', 'g105', 'g106', 'g107', 'g108', 'g109' )
-) to 'test_mapping_sessions_results.csv' delimiter E'\t' csv
+) to 'test_mapping_sessions_results.csv' delimiter E'\t'  NULL '\N' csv
 ```
 
 ```