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#[cfg(test)]
use test_env_helpers::*;

#[cfg(test)]
#[before_all]
mod tests {
    use log::{debug, info};
    use sqlparser::ast::{ColumnDef, HiveDistributionStyle, HiveFormat, Ident, ObjectName};
    use sqlparser::ast::DataType::Text;
    use sqlparser::ast::Statement::CreateTable;

    use pg_sync;
    use pg_sync::plan::{Error, Plan};
    use pg_sync::settings::{Files, Settings};

    fn before_all() {
        pg_sync::setup_logger(log::LevelFilter::Debug).expect("Setting up logger failed with panic!.");
    }

    // #[test]
    fn dummy_test_case() {
        let mut settings = pg_sync::make_settings(&"pg-sync".to_string());
        let mut client = pg_sync::db_connection::make_connection(&settings.postgresql);
        if let is_schema_exist = client.query_one("SELECT EXISTS(SELECT 1 FROM information_schema.schemata WHERE schema_name = $1)", &[&"dummy_test_case"]).unwrap() {
            let schema_status: bool = is_schema_exist.get(0);
            debug!("schema_status; {}",schema_status);
        }
        let _ = client.execute(format!("CREATE SCHEMA {} AUTHORIZATION postgres", "dummy_test_case").as_str(), &[]);
        let _ = client.execute(format!("SET search_path TO {}", "dummy_test_case").as_str(), &[]);
        let _ = client.execute("create table test_table_1()", &[]);
    }

    #[test]
    fn test_1_new_table() {
        debug!("test_1_new_table");
        let (settings, result) = extract_plan_from_schema_definition("data/schema.1.sql", "test_1".to_string());
        info!("{:?}",result);
        let mut client = pg_sync::db_connection::make_connection(&settings.postgresql);

        let plan = correct_plan_for_schema_1();
        assert_eq!(format!("{:?}", plan), format!("{:?}", result.as_ref().unwrap()));
        info!("######################################################");
        result.as_ref().unwrap().apply_plan_up(&mut client);
        result.as_ref().unwrap().apply_plan_down(&mut client);
    }


    #[test]
    fn test_2_add_new_table() {
        debug!("test_2_add_new_table");

        let (settings1, result1) = extract_plan_from_schema_definition("data/schema.2.1.sql", "test_2".to_string());
        info!("result1: {:?}",result1);
        let mut client = pg_sync::db_connection::make_connection(&settings1.postgresql);
        info!("######################################################");
        result1.as_ref().unwrap().apply_plan_up(&mut client);
        info!("######################################################");
        let (settings2, result2) = extract_plan_from_schema_definition("data/schema.2.2.sql", "test_2".to_string());
        info!("result2: {:?}",result2);
        let plan = correct_plan_for_schema_2_2();
        assert_eq!(format!("{:?}", plan), format!("{:?}", result2.as_ref().unwrap()));
        // info!("######################################################");
        result2.as_ref().unwrap().apply_plan_up(&mut client);
        result2.as_ref().unwrap().apply_plan_down(&mut client);
        result1.as_ref().unwrap().apply_plan_down(&mut client);
    }

    // #[test]
    fn test_3_drop_table() {
        debug!("test_3_drop_table");

        let (settings1, result1) = extract_plan_from_schema_definition("data/schema.3.1.sql", "public".to_string());
        let mut client = pg_sync::db_connection::make_connection(&settings1.postgresql);
        info!("######################################################");
        result1.as_ref().unwrap().apply_plan_up(&mut client);
        info!("######################################################");
        let (settings2, result2) = extract_plan_from_schema_definition("data/schema.3.2.sql", "public".to_string());
        info!("{:?}",result2);
        // let mut client = pg_sync::db_connection::make_connection(&settings.postgresql);
        info!("######################################################");
        result2.as_ref().unwrap().apply_plan_up(&mut client);
        result2.as_ref().unwrap().apply_plan_down(&mut client);
        result1.as_ref().unwrap().apply_plan_down(&mut client);

        // let plan = correct_plan_for_schema_2_2();
        // assert_eq!(format!("{:?}", plan), format!("{:?}", result2.unwrap()))
    }


    fn extract_plan_from_schema_definition(file: &str, schema_name: String) -> (Settings, Result<Plan, Error>) {
        let mut settings = pg_sync::make_settings(&"pg-sync".to_string());
        settings.postgresql.schema = Some(schema_name);
        settings.files = Some(Files {
            file: Some(file.to_string()),
            files: None,
            folder: None,
        });
        let result = pg_sync::apply_file(&settings, pg_sync::db_connection::make_connection(&settings.postgresql));
        (settings, result)
    }

    fn correct_plan_for_schema_1() -> Plan {
        let mut plan = pg_sync::plan::Plan::new();
        plan.schema_name = "test_1".to_string();
        plan.schema_does_not_exist = true;
        plan.table_names_all_from_file.push("table1".to_string());
        plan.table_names_unique_from_file.push("table1".to_string());
        plan.table_names_new.push("table1".to_string());
        plan.table_statements_new.push(
            CreateTable { or_replace: false, temporary: false, external: false, global: None, if_not_exists: false, name: ObjectName(vec![Ident { value: "table1".to_string(), quote_style: None }]), columns: vec![ColumnDef { name: Ident { value: "column11".to_string(), quote_style: None }, data_type: Text, collation: None, options: vec![] }], constraints: vec![], hive_distribution: HiveDistributionStyle::NONE, hive_formats: Some(HiveFormat { row_format: None, storage: None, location: None }), table_properties: vec![], with_options: vec![], file_format: None, location: None, query: None, without_rowid: false, like: None, engine: None, default_charset: None, collation: None, on_commit: None }
        );
        plan.sql_statements_for_step_up.push("CREATE TABLE table1 (column11 TEXT)".to_string());
        plan.sql_statements_for_step_down.push("DROP TABLE table1".to_string());
        plan
    }

    fn correct_plan_for_schema_2_2() -> Plan {
        let mut plan = pg_sync::plan::Plan::new();
        plan.schema_name = "test_2".to_string();
        plan.schema_does_not_exist = false;
        plan.table_names_all_from_file.push("table21".to_string());
        plan.table_names_all_from_file.push("table22".to_string());
        plan.table_names_all_from_db.push("table21".to_string());
        plan.table_names_unique_from_file.push("table21".to_string());
        plan.table_names_unique_from_file.push("table22".to_string());
        plan.table_names_existing.push("table21".to_string());
        plan.table_names_unchanged.push("table21".to_string());
        plan.table_names_new.push("table22".to_string());
        plan.table_statements_new.push(
            CreateTable { or_replace: false, temporary: false, external: false, global: None, if_not_exists: false, name: ObjectName(vec![Ident { value: "table22".to_string(), quote_style: None }]), columns: vec![ColumnDef { name: Ident { value: "column221".to_string(), quote_style: None }, data_type: Text, collation: None, options: vec![] }], constraints: vec![], hive_distribution: HiveDistributionStyle::NONE, hive_formats: Some(HiveFormat { row_format: None, storage: None, location: None }), table_properties: vec![], with_options: vec![], file_format: None, location: None, query: None, without_rowid: false, like: None, engine: None, default_charset: None, collation: None, on_commit: None }
        );
        plan.sql_statements_for_step_up.push("CREATE TABLE table22 (column221 TEXT)".to_string());
        plan.sql_statements_for_step_down.push("DROP TABLE table22".to_string());
        plan
    }

}