//! The `repositories` and `pushes` tables.

use super::{now_ms, Pool};
use hub_api::Visibility;
use sqlx::FromRow;

#[derive(Clone, Debug, FromRow)]
pub struct RepoRow {
    pub id: i64,
    pub owner: String,
    pub name: String,
    pub description: String,
    pub default_bookmark: String,
    pub visibility: String,
    pub created_ms: i64,
    pub updated_ms: i64,
}

impl RepoRow {
    pub fn visibility(&self) -> Visibility {
        Visibility::parse(&self.visibility).unwrap_or(Visibility::Private)
    }

    pub fn slug(&self) -> String {
        format!("{}/{}", self.owner, self.name)
    }
}

#[derive(Clone, Debug, FromRow)]
pub struct PushRow {
    pub id: i64,
    pub at_ms: i64,
    pub reference: String,
    pub ok: bool,
    pub reason: String,
    pub old_state: String,
    pub new_state: String,
    pub heads: i64,
    pub changes: i64,
    pub pusher: String,
}

/// One reference's outcome in a push, as the protocol backend reports it.
#[derive(Clone, Debug)]
pub struct PushOutcome {
    pub reference: String,
    pub ok: bool,
    pub reason: String,
    pub old_state: String,
    pub new_state: String,
    pub heads: i64,
    pub changes: i64,
}

pub async fn list(pool: &Pool) -> sqlx::Result<Vec<RepoRow>> {
    sqlx::query_as("SELECT * FROM repositories ORDER BY updated_ms DESC, owner, name").fetch_all(pool).await
}

pub async fn get_by_id(pool: &Pool, id: i64) -> sqlx::Result<Option<RepoRow>> {
    sqlx::query_as("SELECT * FROM repositories WHERE id = ?").bind(id).fetch_optional(pool).await
}

pub async fn list_by_owner(pool: &Pool, owner: &str) -> sqlx::Result<Vec<RepoRow>> {
    sqlx::query_as("SELECT * FROM repositories WHERE owner = ? ORDER BY updated_ms DESC, name").bind(owner).fetch_all(pool).await
}

pub async fn get(pool: &Pool, owner: &str, name: &str) -> sqlx::Result<Option<RepoRow>> {
    sqlx::query_as("SELECT * FROM repositories WHERE owner = ? AND name = ?").bind(owner).bind(name).fetch_optional(pool).await
}

pub async fn create(pool: &Pool, owner: &str, name: &str, description: &str, visibility: Visibility) -> sqlx::Result<RepoRow> {
    let now = now_ms();
    sqlx::query_as(
        "INSERT INTO repositories (owner, name, description, visibility, created_ms, updated_ms) VALUES (?, ?, ?, ?, ?, ?) RETURNING *",
    )
    .bind(owner)
    .bind(name)
    .bind(description)
    .bind(visibility.as_str())
    .bind(now)
    .bind(now)
    .fetch_one(pool)
    .await
}

pub async fn delete(pool: &Pool, id: i64) -> sqlx::Result<()> {
    sqlx::query("DELETE FROM repositories WHERE id = ?").bind(id).execute(pool).await?;
    Ok(())
}

pub async fn set_description(pool: &Pool, id: i64, description: &str) -> sqlx::Result<()> {
    sqlx::query("UPDATE repositories SET description = ? WHERE id = ?").bind(description).bind(id).execute(pool).await?;
    Ok(())
}

pub async fn set_default_bookmark(pool: &Pool, id: i64, bookmark: &str) -> sqlx::Result<()> {
    sqlx::query("UPDATE repositories SET default_bookmark = ? WHERE id = ?").bind(bookmark).bind(id).execute(pool).await?;
    Ok(())
}

pub async fn set_visibility(pool: &Pool, id: i64, visibility: Visibility) -> sqlx::Result<()> {
    sqlx::query("UPDATE repositories SET visibility = ? WHERE id = ?").bind(visibility.as_str()).bind(id).execute(pool).await?;
    Ok(())
}

/// Record a push's per-reference results and bump the repository's activity.
pub async fn record_push(pool: &Pool, id: i64, pusher: Option<(i64, &str)>, results: &[PushOutcome]) -> sqlx::Result<()> {
    let now = now_ms();
    let mut tx = pool.begin().await?;
    for r in results {
        sqlx::query("INSERT INTO pushes (repo_id, at_ms, reference, ok, reason, old_state, new_state, heads, changes, account_id, pusher) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
            .bind(id)
            .bind(now)
            .bind(&r.reference)
            .bind(r.ok)
            .bind(&r.reason)
            .bind(&r.old_state)
            .bind(&r.new_state)
            .bind(r.heads)
            .bind(r.changes)
            .bind(pusher.map(|p| p.0).filter(|id| *id > 0))
            .bind(pusher.map(|p| p.1).unwrap_or(""))
            .execute(&mut *tx)
            .await?;
    }
    if results.iter().any(|r| r.ok) {
        sqlx::query("UPDATE repositories SET updated_ms = ? WHERE id = ?").bind(now).bind(id).execute(&mut *tx).await?;
    }
    tx.commit().await
}

pub async fn pushes(pool: &Pool, id: i64, limit: i64) -> sqlx::Result<Vec<PushRow>> {
    sqlx::query_as("SELECT id, at_ms, reference, ok, reason, old_state, new_state, heads, changes, pusher FROM pushes WHERE repo_id = ? ORDER BY at_ms DESC, id DESC LIMIT ?")
        .bind(id)
        .bind(limit)
        .fetch_all(pool)
        .await
}