package debug_mode 

import (
    "log"

    _ "github.com/mattn/go-sqlite3"
    "github.com/jmoiron/sqlx"
)

func Init_testdb(DB_TYPE string, DB_CONNECTION_STRING string) {
    
    db, err := sqlx.Connect(DB_TYPE, DB_CONNECTION_STRING)
    if err != nil {
        log.Print("couldn't open test db")
        log.Fatal(err)
    }

    defer db.Close()

    init_sql := `

CREATE TABLE accounts (
	acnt_id int4 NOT NULL GENERATED ALWAYS AS IDENTITY,
	acnt_dsply_name varchar(50) NOT NULL,
	acnt_description varchar(250) NULL,
	CONSTRAINT accounts_pkey PRIMARY KEY (acnt_id)
);

CREATE TABLE buckets (
	bkt_id int4 NOT NULL GENERATED ALWAYS AS IDENTITY,
	bkt_dsply_code varchar(5) NOT NULL,
	bkt_dsply_name varchar(50) NULL,
	bkt_description varchar(250) NULL,
	CONSTRAINT buckets_pkey PRIMARY KEY (bkt_id)
);

CREATE TABLE transaction_breakdown (
	trns_brkdwn_id int4 NOT NULL GENERATED ALWAYS AS IDENTITY,
	trns_brkdwn_amount money NOT NULL,
	trns_brkdwn_parent_transaction int4 NOT NULL,
	trns_brkdwn_catagory int4 NULL,
	trns_brkdwn_bucket int4 NULL,
	CONSTRAINT transaction_breakdown_pkey PRIMARY KEY (trns_brkdwn_id)
);

alter table transaction_breakdown add constraint transaction_breakdown_parent_transaction_fkey foreign key (trns_brkdwn_parent_transaction) references transactions(trns_id);
alter table transaction_breakdown add constraint transaction_breakdown_catagory_fkey foreign key (trns_brkdwn_catagory) references transaction_categories(trns_ctgry_id);
alter table transaction_breakdown add constraint transaction_breakdown_bucket_fkey foreign key (trns_brkdwn_bucket) references buckets(bkt_id);

CREATE TABLE transactions (
	trns_id int4 NOT NULL GENERATED ALWAYS AS IDENTITY,
	trns_amount money NOT NULL,
	trns_description varchar(250) NULL,
	trns_account int4 NOT NULL,
	trns_bucket int4 NULL,
	trns_date Date not null,
	CONSTRAINT transactions_pkey PRIMARY KEY (trns_id)
);

ALTER TABLE transactions ADD CONSTRAINT transactions_trns_account_fkey FOREIGN KEY (trns_account) REFERENCES accounts(acnt_id);
ALTER TABLE transactions ADD CONSTRAINT transactions_trns_bucket_fkey FOREIGN KEY (trns_bucket) REFERENCES buckets(bkt_id) ON DELETE SET NULL;

CREATE TABLE transaction_categories (
	trns_ctgry_id int4 NOT NULL GENERATED ALWAYS AS IDENTITY,
	trns_ctgry_dsply_code varchar(5) NOT NULL,
	trns_ctgry_dsply_name varchar(50) NOT NULL,
	trns_ctgry_description varchar(250) NULL,
	CONSTRAINT transaction_categories_pkey PRIMARY KEY (trns_ctgry_id)
);

-- transaction_breakdown foreign keys

ALTER TABLE transaction_breakdown ADD CONSTRAINT transaction_breakdown_trns_brkdwn_catagory_fkey FOREIGN KEY (trns_brkdwn_catagory) REFERENCES transaction_categories(trns_ctgry_id) ON DELETE SET NULL;
ALTER TABLE transaction_breakdown ADD CONSTRAINT transaction_breakdown_trns_brkdwn_parent_transaction_fkey FOREIGN KEY (trns_brkdwn_parent_transaction) REFERENCES transactions(trns_id) ON DELETE CASCADE;
ALTER TABLE transaction_breakdown ADD CONSTRAINT transaction_breakdown_trns_brkdwn_bucket_fkey FOREIGN KEY (trns_brkdwn_bucket) REFERENCES buckets(bkt_id) ON DELETE SET NULL;
`

    tx := db.MustBegin()
    tx.MustExec(init_sql)

    tx.Commit()

    if err != nil {
        log.Fatal(err)
    }

    

    log.Print("Test database initialized")

}