use sea_orm_migration::prelude::*;

#[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(Article::Table)
                    .if_not_exists()
                    .col(ColumnDef::new(Article::Id).uuid().not_null().primary_key())
                    .col(ColumnDef::new(Article::TenantId).uuid().not_null())
                    .col(ColumnDef::new(Article::Title).string_len(200).not_null())
                    .col(ColumnDef::new(Article::Summary).text().null())
                    .col(ColumnDef::new(Article::Content).text().not_null())
                    .col(ColumnDef::new(Article::CoverImage).string_len(500).null())
                    .col(ColumnDef::new(Article::Category).string_len(50).null())
                    .col(ColumnDef::new(Article::Author).string_len(100).null())
                    .col(ColumnDef::new(Article::PublishedAt).timestamp_with_time_zone().null())
                    .col(
                        ColumnDef::new(Article::CreatedAt)
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::current_timestamp()),
                    )
                    .col(
                        ColumnDef::new(Article::UpdatedAt)
                            .timestamp_with_time_zone()
                            .not_null()
                            .default(Expr::current_timestamp()),
                    )
                    .col(ColumnDef::new(Article::CreatedBy).uuid().null())
                    .col(ColumnDef::new(Article::UpdatedBy).uuid().null())
                    .col(ColumnDef::new(Article::DeletedAt).timestamp_with_time_zone().null())
                    .col(
                        ColumnDef::new(Article::Version)
                            .integer()
                            .not_null()
                            .default(1),
                    )
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_article_tenant_category")
                    .table(Article::Table)
                    .col(Article::TenantId)
                    .col(Article::Category)
                    .to_owned(),
            )
            .await?;

        manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_article_tenant_published")
                    .table(Article::Table)
                    .col(Article::TenantId)
                    .col(Article::PublishedAt)
                    .to_owned(),
            )
            .await
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
        manager
            .drop_index(Index::drop().name("idx_article_tenant_published").to_owned())
            .await?;
        manager
            .drop_index(Index::drop().name("idx_article_tenant_category").to_owned())
            .await?;
        manager
            .drop_table(Table::drop().table(Article::Table).to_owned())
            .await
    }
}

#[derive(DeriveIden)]
enum Article {
    Table,
    Id,
    TenantId,
    Title,
    Summary,
    Content,
    CoverImage,
    Category,
    Author,
    PublishedAt,
    CreatedAt,
    UpdatedAt,
    CreatedBy,
    UpdatedBy,
    DeletedAt,
    Version,
}