use std::cmp::Ordering;
use std::collections::HashSet;

// As an artist, I can add artwork and attach it to a product

// As an artist, I can enter detailed information about a product

// As an artist, I can store a product for later recall by me or connoisseurs.

// As a connoisseur, I can search the gallery for artwork matching given keywords and see products
// containing that artwork

// As a connoisseur, I can select one or many products and submit them in a job to an artist

// As an artist, I can select individual products to be featured, and rank first in default fetch lists

// As an artist, I can select individual products to be featured, and rank first in search results

// As an artist, I can select entire categories to be featured, and rank first in search results

// As an artist, I can select entire categories to be featured, and rank first in default fetch
// lists

// Sellable artwork, artowrk with a price attached to it. Prices are in cents to do comparisons to
// other products without fractions. Has a quantity to indicate stock. Can be
// featured in order to appear higher in connoisseur search results.
#[derive(Debug, Clone)]
struct Product {
    artwork: Artwork,
    cents: u64,
    quantity: u64,
    featured: bool,
}

impl PartialEq for Product {
    fn eq(&self, other: &Self) -> bool {
        self.cents == other.cents
    }
}

impl PartialOrd for Product {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        self.cents.partial_cmp(&other.cents)
    }
}

impl Product {
    fn dollars(&self) -> f64 {
        self.cents as f64 / 100.0
    }
}

#[derive(Debug, Clone)]
struct Artwork {
    name: String,
    description: String,
    category: Vec<String>,
    tags: HashSet<String>,
}

struct Customer {}

trait Artist {
    fn create_art<G: Gallery>(gallery: G) -> Result<(), ()>;
}

struct Sort {
    highest_price: bool,
    lowest_price: bool,
    highest_quantity: bool,
    lowest_quantity: bool,
    atoz: bool,
    ztoa: bool,
    oldest: bool,
    newest: bool,
    featured: bool,
}

struct Filter {
    search_term: HashSet<String>,
    category: Vec<String>,
    sort: Sort,
}

trait Gallery {
    fn store(artwork: Artwork) -> Result<(), ()>;
    fn search(filter: Filter, sort: Sort) -> Result<(), ()>;
}

struct MockGallery {}

impl Gallery for MockGallery {
    fn store(_artwork: Artwork) -> Result<(), ()> {
        Ok(())
    }
    fn search(_search: Filter, _sort: Sort) -> Result<(), ()> {
        Ok(())
    }
}

struct Job {}

fn add_two(a: usize, b: usize) -> usize {
    a + b
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn add() {
        assert_eq!(4, add_two(2, 2));
    }

    #[test]
    fn dollars() {
        let product = Product {
            artwork: Artwork {
                tags: HashSet::new(),
                category: vec![],
                name: "".into(),
                description: "".into(),
            },
            cents: 1000,
            quantity: 0,
            featured: false,
        };
        assert_eq!(10.00, product.dollars());
        let product = Product {
            artwork: Artwork {
                tags: HashSet::new(),
                category: vec![],
                name: "".into(),
                description: "".into(),
            },
            cents: 1234,
            quantity: 0,
            featured: false,
        };
        assert_eq!(12.34, product.dollars());
    }

    #[test]
    fn price_check() {
        let artwork = Artwork {
            tags: HashSet::new(),
            category: vec![],
            name: "".into(),
            description: "".into(),
        };
        let product1 = Product {
            artwork: artwork.clone(),
            cents: 1000,
            quantity: 0,
            featured: false,
        };
        let mut product2 = Product {
            artwork,
            cents: 1000,
            quantity: 0,
            featured: false,
        };

        assert_eq!(product1, product2);
        product2.cents = 1234;
        assert_ne!(product1, product2);
        assert!(product1 < product2);
    }
}