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use std::str::FromStr;
use anyhow::{Result, anyhow, Context};
use lazy_static::lazy_static;
use regex::Regex;
use toml;
use serde_json;
use serde;
use fatcat_openapi::models;
use crate::Specifier;
#[derive(Debug, PartialEq, Clone)]
pub struct Mutation {
field: String,
value: Option<String>,
}
impl FromStr for Mutation {
type Err = anyhow::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
// first try simple entity prefixes
lazy_static! {
static ref MUTATE_ENTITY_RE: Regex = Regex::new(r"^([a-z_]+)=(.*)$").unwrap();
}
if let Some(captures) = MUTATE_ENTITY_RE.captures(s) {
// XXX: Some() vs None for value
return Ok(Mutation {
field: captures[1].to_string(),
value: match &captures[2] {
"" => None,
val => Some(val.to_string()),
},
});
}
Err(anyhow!("not a field mutation: {}", s))
}
}
/*
* Goal is to have traits around API entities. Things we'll want to do on concrete entities:
*
* - print, or pretty-print, as JSON or TOML
* - get fcid (or, self-specifier)
* - update (mutate or return copy) fields based on parameters
* - update self to remote API
*
* Methods that might return trait objects:
*
* - get by specifier
*/
pub trait ApiEntityModel: ApiModelSer+ApiModelIdent+ApiModelMutate {
}
impl ApiEntityModel for models::ReleaseEntity {}
impl ApiEntityModel for models::ContainerEntity {}
impl ApiEntityModel for models::CreatorEntity {}
impl ApiEntityModel for models::WorkEntity {}
impl ApiEntityModel for models::FileEntity {}
impl ApiEntityModel for models::FilesetEntity {}
impl ApiEntityModel for models::WebcaptureEntity {}
impl ApiEntityModel for models::Editor{}
impl ApiEntityModel for models::Editgroup{}
impl ApiEntityModel for models::ChangelogEntry{}
pub trait ApiModelSer {
fn to_json_string(&self) -> Result<String>;
fn to_toml_string(&self) -> Result<String>;
}
impl<T: serde::Serialize> ApiModelSer for T {
fn to_json_string(&self) -> Result<String> {
Ok(serde_json::to_string(self)?)
}
fn to_toml_string(&self) -> Result<String> {
Ok(toml::Value::try_from(self)?.to_string())
}
}
pub trait ApiModelIdent {
fn specifier(&self) -> Specifier;
}
macro_rules! generic_entity_specifier {
($specifier_type:ident) => {
fn specifier(&self) -> Specifier {
if let Some(fcid) = &self.ident { Specifier::$specifier_type(fcid.to_string()) } else { panic!("expected full entity") }
}
}
}
impl ApiModelIdent for models::ReleaseEntity { generic_entity_specifier!(Release); }
impl ApiModelIdent for models::ContainerEntity { generic_entity_specifier!(Container); }
impl ApiModelIdent for models::CreatorEntity { generic_entity_specifier!(Creator); }
impl ApiModelIdent for models::WorkEntity { generic_entity_specifier!(Work); }
impl ApiModelIdent for models::FileEntity { generic_entity_specifier!(File); }
impl ApiModelIdent for models::FilesetEntity { generic_entity_specifier!(FileSet); }
impl ApiModelIdent for models::WebcaptureEntity { generic_entity_specifier!(WebCapture); }
impl ApiModelIdent for models::ChangelogEntry{
fn specifier(&self) -> Specifier {
Specifier::Changelog(self.index)
}
}
impl ApiModelIdent for models::Editgroup {
fn specifier(&self) -> Specifier {
if let Some(fcid) = &self.editgroup_id { Specifier::Editgroup(fcid.to_string()) } else { panic!("expected full entity") }
}
}
impl ApiModelIdent for models::Editor {
fn specifier(&self) -> Specifier {
if let Some(fcid) = &self.editor_id { Specifier::Editor(fcid.to_string()) } else { panic!("expected full entity") }
}
}
pub trait ApiModelMutate {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()>;
}
impl ApiModelMutate for models::ReleaseEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
for m in mutations {
match (m.field.as_str(), m.value) {
("title", val) => { self.title = val; },
("subtitle", val) => { self.subtitle = val; },
(field, _) => unimplemented!("setting field {} on a release", field),
}
}
Ok(())
}
}
impl ApiModelMutate for models::ContainerEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::CreatorEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::WorkEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::FileEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::FilesetEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::WebcaptureEntity {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::Editor {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::Editgroup {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
impl ApiModelMutate for models::ChangelogEntry {
fn mutate(&mut self, mutations: Vec<Mutation>) -> Result<()> {
unimplemented!("mutations")
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_mutation_from_str() -> () {
assert!(Mutation::from_str("release_asdf").is_err());
assert_eq!(Mutation::from_str("title=blah").unwrap(),
Mutation { field: "title".to_string(), value: Some("blah".to_string()) });
assert_eq!(Mutation::from_str("title=").unwrap(),
Mutation { field: "title".to_string(), value: None });
assert_eq!(Mutation::from_str("title=string with spaces and stuff").unwrap(),
Mutation { field: "title".to_string(), value: Some("string with spaces and stuff".to_string()) });
}
}
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