//! Artifact names: what a thing looks like when you find it, and what it's
//! called once a scholar has told you what it is.

use rand::RngExt;
use serde::{Deserialize, Serialize};

use super::{Culture, pick};
use crate::seed::Rng;

#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
pub struct Artifact {
    /// What you see when you find it: "a humming ochre lattice".
    pub unidentified: String,
    /// Its true name: "the Lacquered Orrery of Teshemond".
    pub true_name: String,
    /// Whether a scholar has told you its true name.
    pub identified: bool,
}

impl Artifact {
    /// What you call it: its true name once you know it.
    pub fn name(&self) -> &str {
        if self.identified { &self.true_name } else { &self.unidentified }
    }
}

pub fn artifact(rng: &mut Rng) -> Artifact {
    let look = format!("{} {} {}", pick(QUALITIES, rng), pick(COLOURS, rng), pick(SHAPES, rng));
    let unidentified = super::a(&look);

    let object = pick(OBJECTS, rng);
    let culture = Culture::ALL[rng.random_range(..Culture::ALL.len())];
    let true_name = match rng.random_range(0..5) {
        0 => format!("the {} {object} of {}", pick(MATERIALS, rng), culture.word(rng)),
        1 => format!("the {object} of {}", culture.place(rng)),
        2 => format!("{}'s {object}", culture.word(rng)),
        3 => format!("the {} {object}", pick(EPITHETS, rng)),
        _ => format!("the {object} {}", pick(CLAUSES, rng)),
    };
    Artifact { unidentified, true_name, identified: false }
}

const QUALITIES: &[&str] = &[
    "humming", "warm", "weightless", "faintly singing", "ice-cold", "flickering", "whispering",
    "slowly turning", "perfectly still", "pulsing", "dust-caked", "oddly heavy", "tarnished",
    "ticking", "breathing",
];

const COLOURS: &[&str] = &[
    "ochre", "verdigris", "bone-white", "umber", "cerulean", "oxblood", "iridescent", "smoke-grey",
    "jet-black", "saffron", "rust-red", "pearlescent", "cobalt",
];

const SHAPES: &[&str] = &[
    "lattice", "spindle", "disc", "knot", "sphere", "prism", "coil", "shard", "ring", "cube",
    "cylinder", "helix", "lens", "rod", "tessera",
];

const MATERIALS: &[&str] = &[
    "Saltglass", "Black-Iron", "Lacquered", "Bone", "Star-Ivory", "Verdigris", "Voidsteel",
    "Smoked-Glass", "Amber", "Obsidian", "Gilt", "Quicksilver",
];

const OBJECTS: &[&str] = &[
    "Orrery", "Reliquary", "Astrolabe", "Censer", "Lattice", "Mask", "Crown", "Key", "Sigil",
    "Codex", "Lens", "Spindle", "Compass", "Chalice", "Engine", "Bell", "Heart", "Mirror", "Loom",
];

const EPITHETS: &[&str] = &[
    "Weeping", "Ninth", "Hollow", "Unspoken", "Last", "Sleeping", "Burning", "Patient", "Seventh",
    "Silent", "Drowned", "Unfinished", "Forgotten", "Inverted",
];

const CLAUSES: &[&str] = &[
    "That Remembers", "That Was Promised", "Which Does Not Turn", "That Sings at Dusk",
    "That Counts the Dead", "That Opens Inward", "That Waits", "of Unmaking", "of Seven Silences",
    "Beneath the Sun",
];