use sea_orm_migration::{prelude::*, schema::*};

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .create_table(
                Table::create()
                    .table(Alias::new("diagnosis"))
                    .if_not_exists()
                    .col(uuid("id").primary_key())
                    .col(uuid("tenant_id").not_null())
                    .col(uuid("patient_id").not_null())
                    .col(uuid_null("health_record_id"))
                    .col(string_uniq("icd_code").not_null())
                    .col(string("diagnosis_name").not_null())
                    .col(string("diagnosis_type").not_null().default("primary"))
                    .col(date("diagnosed_date").not_null())
                    .col(string("status").not_null().default("active"))
                    .col(uuid_null("diagnosed_by"))
                    .col(string_null("notes"))
                    .col(timestamp_with_time_zone("created_at").not_null().default(Expr::current_timestamp()))
                    .col(timestamp_with_time_zone("updated_at").not_null().default(Expr::current_timestamp()))
                    .col(uuid_null("created_by"))
                    .col(uuid_null("updated_by"))
                    .col(timestamp_with_time_zone_null("deleted_at"))
                    .col(integer("version").not_null().default(1))
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_diagnosis_tenant_patient")
                    .table(Alias::new("diagnosis"))
                    .col(Alias::new("tenant_id"))
                    .col(Alias::new("patient_id"))
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_diagnosis_icd_code")
                    .table(Alias::new("diagnosis"))
                    .col(Alias::new("tenant_id"))
                    .col(Alias::new("icd_code"))
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_diagnosis_deleted_at")
                    .table(Alias::new("diagnosis"))
                    .col(Alias::new("deleted_at"))
                    .to_owned(),
            )
            .await?;

        Ok(())
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .drop_table(Table::drop().table(Alias::new("diagnosis")).to_owned())
            .await
    }
}