use serde::{Deserialize, Serialize};
use serde_json::json;
use std::fs;
use std::path::Path;
use crate::commands::generate_constraint::domain::{list_constraints, parse_domain};
use crate::error::{CliError, CliResult};
const APP_SPEC_PATH: &str = "solverforge.app.toml";
const UI_MODEL_PATH: &str = "static/generated/ui-model.json";
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct AppSpec {
#[serde(default)]
pub app: AppMeta,
#[serde(default)]
pub runtime: RuntimeMeta,
#[serde(default)]
pub demo: DemoMeta,
#[serde(default)]
pub solution: SolutionMeta,
#[serde(default)]
pub facts: Vec<CollectionSpec>,
#[serde(default)]
pub entities: Vec<CollectionSpec>,
#[serde(default)]
pub variables: Vec<VariableSpec>,
#[serde(default)]
pub constraints: Vec<ConstraintSpec>,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct AppMeta {
#[serde(default)]
pub name: String,
#[serde(default)]
pub starter: String,
#[serde(default)]
pub cli_version: String,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct RuntimeMeta {
#[serde(default)]
pub target: String,
#[serde(default)]
pub runtime_source: String,
#[serde(default)]
pub ui_source: String,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct SolutionMeta {
#[serde(default)]
pub name: String,
#[serde(default)]
pub score: String,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DemoMeta {
#[serde(default = "default_demo_size")]
pub default_size: String,
#[serde(default = "default_available_demo_sizes")]
pub available_sizes: Vec<String>,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct CollectionSpec {
pub name: String,
pub plural: String,
pub kind: String,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct VariableSpec {
pub entity: String,
pub entity_plural: String,
pub field: String,
pub kind: String,
#[serde(default)]
pub range: String,
#[serde(default)]
pub elements: String,
#[serde(default)]
pub allows_unassigned: bool,
#[serde(default = "default_true")]
pub enabled: bool,
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct ConstraintSpec {
pub name: String,
pub module: String,
#[serde(default = "default_true")]
pub enabled: bool,
}
fn default_true() -> bool {
true
}
fn variable_source_collection(variable: &VariableSpec) -> CliResult<(&str, &str)> {
match variable.kind.as_str() {
"scalar" => Ok(("scalar", &variable.range)),
"list" => Ok(("list", &variable.elements)),
other => Err(CliError::general(format!(
"unsupported variable kind '{}' in {}",
other, APP_SPEC_PATH
))),
}
}
fn default_demo_size() -> String {
"standard".to_string()
}
fn default_available_demo_sizes() -> Vec<String> {
vec![
"small".to_string(),
"standard".to_string(),
"large".to_string(),
]
}
impl Default for DemoMeta {
fn default() -> Self {
Self {
default_size: default_demo_size(),
available_sizes: default_available_demo_sizes(),
}
}
}
pub fn load() -> CliResult<AppSpec> {
let path = Path::new(APP_SPEC_PATH);
let raw = fs::read_to_string(path).map_err(|e| CliError::IoError {
context: format!("failed to read {}", APP_SPEC_PATH),
source: e,
})?;
toml::from_str(&raw)
.map_err(|e| CliError::general(format!("failed to parse {}: {}", APP_SPEC_PATH, e)))
}
pub fn save(spec: &AppSpec) -> CliResult {
let raw = toml::to_string_pretty(spec)
.map_err(|e| CliError::general(format!("failed to serialize {}: {}", APP_SPEC_PATH, e)))?;
fs::write(APP_SPEC_PATH, raw).map_err(|e| CliError::IoError {
context: format!("failed to write {}", APP_SPEC_PATH),
source: e,
})?;
Ok(())
}
pub fn sync_from_project() -> CliResult {
let mut spec = if Path::new(APP_SPEC_PATH).exists() {
load()?
} else {
AppSpec::default()
};
match parse_domain() {
Ok(domain) => {
let inferred_facts: Vec<CollectionSpec> = domain
.facts
.iter()
.map(|fact| CollectionSpec {
name: snake_case(&fact.item_type),
plural: fact.field_name.clone(),
kind: "problem_fact".to_string(),
})
.collect();
spec.solution.name = domain.solution_type;
spec.solution.score = domain.score_type;
spec.entities = domain
.entities
.iter()
.map(|entity| CollectionSpec {
name: snake_case(&entity.item_type),
plural: entity.field_name.clone(),
kind: "planning_entity".to_string(),
})
.collect();
spec.facts = inferred_facts.clone();
let default_fact_plural = if inferred_facts.len() == 1 {
inferred_facts[0].plural.clone()
} else {
String::new()
};
let mut variables = Vec::new();
for entity in &domain.entities {
let entity_name = snake_case(&entity.item_type);
let entity_plural = entity.field_name.clone();
for var in &entity.scalar_vars {
variables.push(VariableSpec {
entity: entity_name.clone(),
entity_plural: entity_plural.clone(),
field: var.field.clone(),
kind: "scalar".to_string(),
range: if var.value_range_provider.is_empty() {
default_fact_plural.clone()
} else {
var.value_range_provider.clone()
},
elements: String::new(),
allows_unassigned: var.allows_unassigned,
enabled: true,
});
}
for var in &entity.list_vars {
variables.push(VariableSpec {
entity: entity_name.clone(),
entity_plural: entity_plural.clone(),
field: var.field.clone(),
kind: "list".to_string(),
range: String::new(),
elements: if var.element_collection.is_empty() {
default_fact_plural.clone()
} else {
var.element_collection.clone()
},
allows_unassigned: false,
enabled: true,
});
}
}
spec.variables = variables;
}
Err(err) if err.contains("requires exactly one #[planning_solution]") => {}
Err(err) => return Err(CliError::general(err)),
}
spec.constraints = list_constraints(Path::new("src/constraints"))
.into_iter()
.map(|name| ConstraintSpec {
module: name.clone(),
name,
enabled: true,
})
.collect();
normalize_demo_meta(&mut spec.demo);
save(&spec)?;
write_ui_model(&spec)
}
pub fn set_demo_size(size: &str) -> CliResult {
let mut spec = load()?;
normalize_demo_meta(&mut spec.demo);
spec.demo.default_size = size.to_string();
if !spec.demo.available_sizes.iter().any(|value| value == size) {
spec.demo.available_sizes.push(size.to_string());
}
normalize_demo_meta(&mut spec.demo);
save(&spec)?;
write_ui_model(&spec)
}
fn normalize_demo_meta(demo: &mut DemoMeta) {
if demo.default_size.is_empty() {
demo.default_size = default_demo_size();
}
if demo.available_sizes.is_empty() {
demo.available_sizes = default_available_demo_sizes();
}
if !demo
.available_sizes
.iter()
.any(|value| value == &demo.default_size)
{
demo.available_sizes.push(demo.default_size.clone());
}
demo.available_sizes.sort();
demo.available_sizes.dedup();
let mut ordered = Vec::new();
for canonical in default_available_demo_sizes() {
if demo.available_sizes.iter().any(|value| value == &canonical) {
ordered.push(canonical);
}
}
for value in &demo.available_sizes {
if !ordered.iter().any(|existing| existing == value) {
ordered.push(value.clone());
}
}
demo.available_sizes = ordered;
}
fn write_ui_model(spec: &AppSpec) -> CliResult {
let path = Path::new(UI_MODEL_PATH);
if let Some(parent) = path.parent() {
fs::create_dir_all(parent).map_err(|e| CliError::IoError {
context: format!("failed to create {}", parent.display()),
source: e,
})?;
}
let entities = spec
.entities
.iter()
.map(|entry| json!({"name": entry.name, "plural": entry.plural, "label": title_case(&entry.name)}))
.collect::<Vec<_>>();
let facts = spec
.facts
.iter()
.map(|entry| json!({"name": entry.name, "plural": entry.plural, "label": title_case(&entry.name)}))
.collect::<Vec<_>>();
let constraints = spec
.constraints
.iter()
.filter(|c| c.enabled)
.map(|c| c.name.clone())
.collect::<Vec<_>>();
let views = spec
.variables
.iter()
.filter(|v| v.enabled)
.map(|variable| {
let (kind, source_collection) = variable_source_collection(variable)?;
let source_plural = resolve_collection_plural(&spec.facts, source_collection);
Ok(json!({
"id": format!("{}-{}", variable.entity, variable.field),
"kind": kind,
"label": format!("{} ยท {}", title_case(&variable.entity), variable.field),
"entity": variable.entity,
"entityPlural": variable.entity_plural,
"sourcePlural": source_plural,
"variableField": variable.field,
"allowsUnassigned": variable.allows_unassigned
}))
})
.collect::<CliResult<Vec<_>>>()?;
let raw = serde_json::to_string_pretty(&json!({
"entities": entities,
"facts": facts,
"constraints": constraints,
"views": views
}))
.map_err(|e| CliError::general(format!("failed to serialize {}: {}", UI_MODEL_PATH, e)))?;
fs::write(path, raw).map_err(|e| CliError::IoError {
context: format!("failed to write {}", UI_MODEL_PATH),
source: e,
})?;
Ok(())
}
fn resolve_collection_plural(collections: &[CollectionSpec], raw: &str) -> String {
collections
.iter()
.find(|entry| entry.plural == raw || entry.name == raw)
.map(|entry| entry.plural.clone())
.unwrap_or_else(|| raw.to_string())
}
fn snake_case(name: &str) -> String {
let mut out = String::new();
for (idx, ch) in name.chars().enumerate() {
if ch.is_uppercase() {
if idx > 0 {
out.push('_');
}
out.push(ch.to_ascii_lowercase());
} else {
out.push(ch);
}
}
out
}
fn title_case(name: &str) -> String {
name.split('_')
.filter(|part| !part.is_empty())
.map(|part| {
let mut chars = part.chars();
match chars.next() {
Some(first) => format!("{}{}", first.to_ascii_uppercase(), chars.as_str()),
None => String::new(),
}
})
.collect::<Vec<_>>()
.join(" ")
}
#[cfg(test)]
mod tests {
use super::{variable_source_collection, VariableSpec};
#[test]
fn variable_source_collection_rejects_unknown_kinds() {
let err = variable_source_collection(&VariableSpec {
kind: "not_a_variable_kind".to_string(),
..VariableSpec::default()
})
.expect_err("unsupported kind should fail");
assert_eq!(
err.to_string(),
"unsupported variable kind 'not_a_variable_kind' in solverforge.app.toml"
);
}
}