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|
use serde::{Deserialize, Serialize};
use thiserror::Error;
use tsify::Tsify;
use uuid::Uuid;
use crate::op::{ChangeSubdivisions, CreateGrid, Op, OpKind};
/// An deterministically derived ID, e.g. a grid ID derived from the
/// op ID which creates it.
#[derive(Tsify)]
#[tsify(type = "string")]
pub struct DerivedId {
base: String,
tag: String,
index: usize,
}
impl ToString for DerivedId {
fn to_string(&self) -> String {
format!("{}:{}={}", self.base, self.tag, self.index)
}
}
trait DerivableId {
fn derive_id(&self, tag: &str, index: usize) -> DerivedId;
}
impl DerivableId for Uuid {
fn derive_id(&self, tag: &str, index: usize) -> DerivedId {
DerivedId {
base: self.to_string(),
tag: tag.to_string(),
index,
}
}
}
impl DerivableId for DerivedId {
fn derive_id(&self, tag: &str, index: usize) -> DerivedId {
DerivedId {
base: self.to_string(),
tag: tag.to_string(),
index,
}
}
}
impl Serialize for DerivedId {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
serializer.serialize_str(&self.to_string())
}
}
impl<'de> Deserialize<'de> for DerivedId {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
let s = String::deserialize(deserializer)?;
let parts: Vec<&str> = s.split(':').collect();
if parts.len() != 2 {
return Err(serde::de::Error::custom("Invalid DerivedId format"));
}
let base = parts[0].to_string();
let tag_index: Vec<&str> = parts[1].split('=').collect();
if tag_index.len() != 2 {
return Err(serde::de::Error::custom("Invalid DerivedId format"));
}
let tag = tag_index[0].to_string();
let index = tag_index[1]
.parse()
.map_err(|_| serde::de::Error::custom("Invalid index"))?;
Ok(DerivedId { base, tag, index })
}
}
#[derive(Default, Serialize, Deserialize, Tsify)]
#[tsify(into_wasm_abi)]
pub struct Doc {
pub grids: Vec<Grid>,
}
#[derive(Serialize, Deserialize, Tsify)]
#[tsify(into_wasm_abi)]
pub struct Grid {
pub id: DerivedId,
pub rows: Vec<Row>,
}
#[derive(Serialize, Deserialize, Tsify)]
#[tsify(into_wasm_abi)]
pub struct Row {
pub id: DerivedId,
pub cells: Vec<Cell>,
}
#[derive(Serialize, Deserialize, Tsify)]
#[tsify(into_wasm_abi)]
pub struct Cell {
pub id: DerivedId,
}
#[derive(Error, Debug)]
pub enum ApplyOpError {}
pub type ApplyOpResult = Result<(), ApplyOpError>;
impl Doc {
pub fn apply_op(&mut self, op: &Op) -> ApplyOpResult {
match &op.kind {
OpKind::CreateGrid(data) => apply_create_grid(self, &op.id, data),
OpKind::ChangeSubdivisions(data) => apply_change_subdivisions(self, data),
}
}
}
fn apply_create_grid(doc: &mut Doc, op_id: &Uuid, data: &CreateGrid) -> ApplyOpResult {
let grid_id = op_id.derive_id("grid", 0);
let rows = (0..data.rows)
.map(|row_idx| {
let row_id = grid_id.derive_id("row", row_idx);
let cells = (0..data.base_cells_per_row)
.map(|cell_idx| Cell {
id: row_id.derive_id("cell", cell_idx),
})
.collect();
Row { id: row_id, cells }
})
.collect();
doc.grids.push(Grid { id: grid_id, rows });
Ok(())
}
fn apply_change_subdivisions(_doc: &mut Doc, _data: &ChangeSubdivisions) -> ApplyOpResult {
todo!()
}
|
