use axum::{
    extract::{Path, State},
    http::StatusCode,
    response::IntoResponse,
    routing::{delete, get, patch, post},
    Json, Router,
};
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};

use crate::{feature::post_interaction::PostInteraction, AppState};

#[derive(Debug, Serialize, Deserialize)]
struct CreatePostInteraction {
    pub post_creation_time: DateTime<Utc>,
    pub interaction_id: i64,
    pub user_id: i64,
}

#[derive(Debug, Serialize, Deserialize)]
struct UpdatePostInteraction {
    pub interaction_time: DateTime<Utc>,
    pub post_creation_time: DateTime<Utc>,
    pub interaction_id: i64,
    pub user_id: i64,
}

pub fn route(State(app_state): State<AppState>) -> Router<AppState> {
    Router::new()
        .route("/", post(create))
        .route("/:interaction_time", get(read))
        .route("/", patch(update))
        .route("/:interaction_time", delete(delete_))
        .route("/posts/:post_creation_time", get(read_all_for_post))
        .with_state(app_state)
}

async fn create(
    State(app_state): State<AppState>,
    Json(create_post_interaction): Json<CreatePostInteraction>,
) -> impl IntoResponse {
    match PostInteraction::create(
        &create_post_interaction.post_creation_time,
        &create_post_interaction.user_id,
        &create_post_interaction.interaction_id,
        &app_state.database_connection,
    )
    .await
    {
        Ok(post_interaction) => (
            StatusCode::CREATED,
            Json(serde_json::json!(post_interaction)),
        ),
        Err(err_val) => (
            StatusCode::BAD_REQUEST,
            Json(serde_json::json!(err_val.to_string())),
        ),
    }
}

async fn read(
    State(app_state): State<AppState>,
    Path(interaction_time): Path<DateTime<Utc>>,
) -> impl IntoResponse {
    match PostInteraction::read(&interaction_time, &app_state.database_connection).await {
        Ok(post_interaction) => (StatusCode::OK, Json(serde_json::json!(post_interaction))),
        Err(err_val) => (
            StatusCode::BAD_REQUEST,
            Json(serde_json::json!(err_val.to_string())),
        ),
    }
}

async fn update(
    State(app_state): State<AppState>,
    Json(update_post_interaction): Json<UpdatePostInteraction>,
) -> impl IntoResponse {
    match PostInteraction::update(
        &update_post_interaction.interaction_time,
        &update_post_interaction.interaction_id,
        &app_state.database_connection,
    )
    .await
    {
        Ok(post_interaction) => (
            StatusCode::ACCEPTED,
            Json(serde_json::json!(post_interaction)),
        ),
        Err(err_val) => (
            StatusCode::BAD_REQUEST,
            Json(serde_json::json!(err_val.to_string())),
        ),
    }
}

async fn delete_(
    State(app_state): State<AppState>,
    Path(interaction_time): Path<DateTime<Utc>>,
) -> impl IntoResponse {
    match PostInteraction::delete(&interaction_time, &app_state.database_connection).await {
        Ok(post_interaction) => (
            StatusCode::NO_CONTENT,
            Json(serde_json::json!(post_interaction)),
        ),
        Err(err_val) => (
            StatusCode::BAD_REQUEST,
            Json(serde_json::json!(err_val.to_string())),
        ),
    }
}

async fn read_all_for_post(
    State(app_state): State<AppState>,
    Path(post_creation_time): Path<DateTime<Utc>>,
) -> impl IntoResponse {
    match PostInteraction::read_all_for_post(&post_creation_time, &app_state.database_connection)
        .await
    {
        Ok(post_interactions) => (StatusCode::OK, Json(serde_json::json!(post_interactions))),
        Err(err_val) => (
            StatusCode::BAD_REQUEST,
            Json(serde_json::json!(err_val.to_string())),
        ),
    }
}