drop function if exists mmt_staging2.fn_BUDNI_LCG_Block ;
CREATE OR REPLACE FUNCTION mmt_staging2.fn_BUDNI_LCG_Block(p_client_id int,p_function_id int, p_file_format text,
p_sheet_mnemonic text, p_file_syspk int)
   RETURNS text AS $$
   declare __make text;
   declare __model text;

  
   declare __client_id int :=p_client_id;
   declare __function_id int :=p_function_id;
   declare __file_format text  :=p_file_format;
   declare __sheet_mnemonic text :=p_sheet_mnemonic;
   declare __file_syspk int :=p_file_syspk;
    declare v_state   text;
   declare v_msg     text;
   declare v_detail  text;
   declare v_hint    text;
   declare v_context text;   
   declare _error int;
   declare v_block text;

 begin

/***********************************************************************************
Function Name:fn_BUDNI_LCG_Block
Function Desc: This function populates data into staging2 blocks
File Format: BUDNI
Sheet Format:BUDNI_LCG
Creation Date: March 21 2021
Updation Date:
Author: compegence team
Function Call: select mmt_staging2.fn_BUDNI_LCG_Block(20,1,'BUDNI','BUDNI_LCG',261);
************************************************************************************/

SET search_path TO  mmt_staging2;

/* rerunnability - delete block tables and update config tables to null */
truncate table mmt_staging2.BUDNI_LCG_Spec_H1_Block;
truncate table mmt_staging2.BUDNI_LCG_Gravity_Test_Block;
truncate table mmt_staging2.stg_specific_table_BUDNI_LCG;
truncate table mmt_staging2.stg_process_table_BUDNI_LCG;



execute 'delete from mmt_ods.fw_jobctrl_file_sheet_block_run_schedule where file_syspk='||p_file_syspk||' and sheet_mnemonic='''||p_sheet_mnemonic||'''';


execute 'update mmt_ods.mmt_config a
set row_number_start=null,
row_previous_number=null,
row_read_end=null,
run_time=null
where  a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';


/* transfer data from generic to specific for BUDNI */
execute 'insert into mmt_staging2.stg_specific_table_BUDNI_LCG
select * from mmt_staging1.mmt_staging_generic_table a
where a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||''' 
and a.file_syspk='||p_file_syspk||'';

/* trimming data */
update mmt_staging2.stg_specific_table_BUDNI_LCG set column3 =  TRIM (TRAILING FROM column3 );
update mmt_staging2.stg_specific_table_BUDNI_LCG set column3 =  TRIM (LEADING FROM column3 );


update mmt_ods.mmt_config set F1_modified =  TRIM (TRAILING FROM F1_modified); 
update mmt_ods.mmt_config set F1_modified =  TRIM (LEADING FROM F1_modified) ;
update mmt_ods.mmt_config set F1_source=F1_modified;
update mmt_ods.mmt_config set F1_source =  TRIM (TRAILING FROM F1_source);
update mmt_ods.mmt_config set F1_source =  TRIM (LEADING FROM F1_source) ;

/* keyword match in config table*/
execute 'update mmt_ods.mmt_config a  
set row_number_start=(select min(b.row_number)
from mmt_staging2.stg_specific_table_BUDNI_LCG  b
where  trim(upper(F1_source))= trim(upper(column3))
and b.is_rownumber_fetched is null)
where a.row_number_start is null 
and a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';

/* reverese update in process table for match*/
execute 'update mmt_staging2.stg_specific_table_BUDNI_LCG  a  
set is_rownumber_fetched=1
from mmt_ods.mmt_config  b
where  trim(upper(F1_source))= trim(upper(column3))
and b.row_number_start=a.row_number
and is_rownumber_fetched is null and a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';

/*  update config files for row numbers start, end */
execute 'update mmt_ods.mmt_config a  set row_previous_number=row_number_start-1 
where a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';


execute 'update mmt_ods.mmt_config a
set row_read_end= (select b.row_number_start
from mmt_ods.mmt_config b 
where b.syspk=a.syspk+1 ) 
where a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';

/* config file last field update as null otherwise it picks up next format row number*/
execute 'update mmt_ods.mmt_config a 
set row_read_end = null 
where f1_modified =''Location of centre of Gravity Test'' 
and a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';

execute 'update mmt_ods.mmt_config a 
set run_time=current_timestamp 
where a.file_format='''||p_file_format||''' and a.sheet_mnemonic='''||p_sheet_mnemonic||'''';

/* tagging ranks for each block in process table*/
execute 'insert into mmt_staging2.stg_process_table_BUDNI_LCG
select a.* , RANK () OVER ( ORDER BY row_number) as rank,b.rank_tag as rank_tag
from mmt_staging2.stg_specific_table_BUDNI_LCG a
join mmt_ods.mmt_config b
on a.row_number >=row_number_start
and (a.row_number< row_read_end or row_read_end is null)
and f1_modified=''Test Tractor Specifiactions''
and b.file_format='''||p_file_format||''' and b.sheet_mnemonic='''||p_sheet_mnemonic||'''
order by a.row_number';



execute 'insert into mmt_staging2.stg_process_table_BUDNI_LCG
select a.* , RANK () OVER ( ORDER BY row_number),b.rank_tag as rank_tag
from  mmt_staging2.stg_specific_table_BUDNI_LCG a
join mmt_ods.mmt_config  b 
on a.row_number >=row_number_start
and (a.row_number< row_read_end or row_read_end is null)
and f1_modified=''Location of centre of Gravity Test'' 
and b.file_format='''||p_file_format||''' and b.sheet_mnemonic='''||p_sheet_mnemonic||'''
order by a.row_number';



/* fetching tractor model and make */
select column3  into __make from mmt_staging2.stg_process_table_BUDNI_LCG a
where  rank_tag='BUDNI_LCG_Spec_H1'  and rank=3;

select column4  into __model from mmt_staging2.stg_process_table_BUDNI_LCG a
where  rank_tag='BUDNI_LCG_Spec_H1' and rank=3;



/* blocks data loading start - BUDNI_LCG_Spec_H1_Block */

perform mmt_staging2.fn_jobctrl_block_begin(__client_id,__function_id,__file_syspk,
'BUDNI_LCG_Spec_H1_Block',__file_format,__sheet_mnemonic,1); 
v_block:='BUDNI_LCG_Spec_H1_Block';
insert into mmt_staging2.BUDNI_LCG_Spec_H1_Block
(
make,model,Tractor_HP,	Rated_RPM,configuration,Transmission_type,	
Wheel_Drive_type,rank
)
select
column3,column4,column5,column6,column7,column8,column9,rank
from mmt_staging2.stg_process_table_BUDNI_LCG
where rank_tag='BUDNI_LCG_Spec_H1' and rank=3;


execute 'update  mmt_staging2.BUDNI_LCG_Spec_H1_Block set
client_id='||p_client_id||',
function_id='||p_function_id||',
file_syspk='||p_file_syspk||',
file_format='''||p_file_format||''',
sheet_mnemonic='''||p_sheet_mnemonic||'''';

update  mmt_staging2.BUDNI_LCG_Spec_H1_block a
set Wheel_Base=column3,
Wheel_track	=column4,
Overall_height =column5,
Ballast_Condition =column6,
Tractor_Weight_reactions_Front =column7,
Tractor_Weight_reactions_Rear =column8
from mmt_staging2.stg_process_table_budni_lcg b 
where b.rank_tag='BUDNI_LCG_Spec_H1'
and b.rank=6
and a.file_syspk=b.file_syspk;

perform mmt_staging2.fn_jobctrl_block_end(__file_syspk,'BUDNI_LCG_Spec_H1_block'); 


/* blocks data loading -BUDNI_LCG_Gravity_Test_Block  */

perform mmt_staging2.fn_jobctrl_block_begin(__client_id,__function_id,__file_syspk,
'BUDNI_LCG_Gravity_Test_Block',__file_format,__sheet_mnemonic,2); 
v_block:='BUDNI_LCG_Gravity_Test_Block';

insert into mmt_staging2.BUDNI_LCG_Gravity_Test_Block
(
column2,column3,column4,column5,column6,column7,
column8,rank
)
select 
column2,column3,column4,column5,column6,column7,
column8,rank
from  mmt_staging2.stg_process_table_BUDNI_LCG a
where rank_tag='BUDNI_LCG_Gravity_Test' and rank <=5
order by rank;


update  mmt_staging2.BUDNI_LCG_Gravity_Test_Block set make=__make,model=__model;
execute 'update  mmt_staging2.BUDNI_LCG_Gravity_Test_Block set
client_id='||p_client_id||',
function_id='||p_function_id||',
file_syspk='||p_file_syspk||',
file_format='''||p_file_format||''',
sheet_mnemonic='''||p_sheet_mnemonic||'''';

update mmt_staging2.BUDNI_LCG_Gravity_Test_Block a 
set column3= b.first_value from (SELECT
  rank, column3, value_partition, first_value(column3) over (partition by value_partition order by rank)
FROM (
  SELECT
    rank,
    column3,
    sum(case when column3 is null then 0 else 1 end) over (order by rank) as value_partition  
    FROM mmt_staging2.BUDNI_LCG_Gravity_Test_Block 
  ORDER BY rank ASC
) as q) b where a.rank = b.rank ;

update mmt_staging2.BUDNI_LCG_Gravity_Test_Block
set ods_record=0 where
rank in (1,2);

perform mmt_staging2.fn_jobctrl_block_end(__file_syspk,'BUDNI_LCG_Gravity_Test_Block'); 

v_context := '';
perform  mmt_staging2.mmt_insert_db_error ( __client_id, __function_id, 1001, 'Compegence', __file_syspk ,__file_format,__sheet_mnemonic ,null,'stg2', 'fn_BUDNI_LCG_Block', v_state, v_msg, v_detail, v_hint, v_context,'success');
return v_context;	
EXCEPTION when OTHERS then 
	
GET STACKED DIAGNOSTICS 
       v_state   = returned_sqlstate,
       v_msg     = message_text,
       v_detail  = pg_exception_detail,
       v_hint    = pg_exception_hint,
       v_context = pg_exception_context;

	   perform  mmt_staging2.mmt_insert_db_error ( __client_id, __function_id, 1001, 'Compegence', __file_syspk ,__file_format,__sheet_mnemonic ,v_block,'stg2', 'fn_BUDNI_LCG_Block', v_state, v_msg, v_detail, v_hint, v_context,'error');
	  return v_context;

end
$$ LANGUAGE plpgsql;