use crate::db::{self, TenebrousDbConn};
use crate::errors::Error;
use crate::models::{
    characters::{CharacterEntry, NewCharacter},
    User,
};
use rocket::response::Redirect;
use rocket_contrib::templates::Template;
use serde_derive::Serialize;
use std::collections::HashMap;

pub(crate) fn routes() -> Vec<rocket::Route> {
    routes![
        view_character,
        new_character,
        new_character_not_logged_in,
        edit_character
    ]
}

//TODO make private -- currently is referenced in homepage route.
//or move to common place.
#[derive(Serialize)]
pub struct TemplateContext {
    pub characters: Vec<CharacterEntry>,
    pub user: User,
}

//TODO should return result based on whether or not character is publicly viewable.
#[get("/<user>/<character_id>")]
fn view_character(
    character_id: i32,
    user: Option<User>,
    conn: TenebrousDbConn,
) -> Result<Template, Error> {
    let user = user.ok_or(Error::NotFound)?;
    let character = db::load_character(conn, character_id)?.ok_or(Error::NotFound)?;

    let mut context = HashMap::new();
    context.insert("name", character.name);
    context.insert("username", user.username);
    Ok(Template::render("view_character", context))
}

#[get("/new")]
fn new_character(logged_in_user: User, conn: TenebrousDbConn) -> Result<Template, Error> {
    let context = HashMap::<String, String>::new();
    Ok(Template::render("new_character", context))
}

#[get("/new", rank = 2)]
fn new_character_not_logged_in() -> Redirect {
    super::common::redirect_to_login()
}

#[get("/<owner>/<character_id>/edit")]
fn edit_character(
    character_id: i32,
    owner: Option<User>,
    logged_in_user: Option<User>,
    conn: TenebrousDbConn,
) -> Result<Template, Error> {
    let owner = owner.ok_or(Error::NotFound)?;
    let logged_in_user = logged_in_user.ok_or(Error::NotLoggedIn)?;
    let character = db::load_character(conn, character_id)?.ok_or(Error::NotFound)?;

    if logged_in_user != owner {
        return Err(Error::NoPermission);
    }

    let mut context = HashMap::new();
    context.insert("name", character.name);
    context.insert("username", owner.username);
    Ok(Template::render("view_character", context))
}