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use crate::sdk::std::json::OBJECT_VALUE; use crate::utils::pckg; use duckscript::types::command::{Command, CommandResult, Commands}; use duckscript::types::instruction::Instruction; use duckscript::types::runtime::StateValue; use serde_json::map::Map; use serde_json::Value; use std::collections::{HashMap, HashSet}; #[cfg(test)] #[path = "./mod_test.rs"] mod mod_test; fn encode_array(name: &str, values: &HashMap<&str, &str>) -> Result<Value, String> { match values.get(format!("{}.length", name).as_str()) { Some(length_str) => match length_str.parse::<usize>() { Ok(length) => { let mut json_vec = vec![]; for index in 0..length { let array_item_name = format!("{}[{}]", name, index); match encode_any(&array_item_name, values) { Ok(array_item) => json_vec.push(array_item), Err(error) => return Err(error), } } Ok(Value::Array(json_vec)) } Err(error) => Err(error.to_string()), }, None => Err(format!( "{} is not a valid JSON array, missing length attribute.", name )), } } fn encode_object(name: &str, values: &HashMap<&str, &str>) -> Result<Value, String> { let child_prefix = format!("{}.", name); let child_prefix_end = child_prefix.len() - 1; let mut children: HashSet<&str> = HashSet::new(); for (key, _) in values { if key.starts_with(&child_prefix) { let last_index = key.rfind('.').unwrap(); if last_index == child_prefix_end { let array_key_end = key.rfind("[").unwrap_or(0); let next_key = if array_key_end > last_index && key.rfind("]").is_some() { &key[0..array_key_end] } else { key }; children.insert(next_key); } } } let mut object = Map::new(); let prefix_length = name.len() + 1; for key in children { match encode_any(key, values) { Ok(json_value) => { let child_key = &key[prefix_length..]; object.insert(child_key.to_string(), json_value); () } Err(error) => return Err(error), } } Ok(Value::Object(object)) } fn encode_any(name: &str, values: &HashMap<&str, &str>) -> Result<Value, String> { match values.get(name) { Some(value) => { if *value == OBJECT_VALUE { encode_object(name, values) } else { Ok(Value::String(value.to_string())) } } None => { if values.contains_key(format!("{}.length", name).as_str()) { encode_array(name, values) } else { Ok(Value::Null) } } } } fn encode(name: &str, variables: &HashMap<String, String>) -> Result<String, String> { let mut object_variables: HashMap<&str, &str> = HashMap::new(); for (key, value) in variables { if key == name || key.starts_with(name) { object_variables.insert(key, value); } } if object_variables.is_empty() { Ok("".to_string()) } else { match encode_any(name, &object_variables) { Ok(value) => Ok(value.to_string()), Err(error) => Err(error), } } } #[derive(Clone)] pub(crate) struct CommandImpl { package: String, } impl Command for CommandImpl { fn name(&self) -> String { pckg::concat(&self.package, "Encode") } fn aliases(&self) -> Vec<String> { vec!["json_encode".to_string()] } fn help(&self) -> String { include_str!("help.md").to_string() } fn clone_and_box(&self) -> Box<dyn Command> { Box::new((*self).clone()) } fn requires_context(&self) -> bool { true } fn run_with_context( &self, arguments: Vec<String>, _state: &mut HashMap<String, StateValue>, variables: &mut HashMap<String, String>, _output_variable: Option<String>, _instructions: &Vec<Instruction>, _commands: &mut Commands, _line: usize, ) -> CommandResult { if arguments.is_empty() { CommandResult::Error("No JSON root variable name provided.".to_string()) } else { match encode(&arguments[0], variables) { Ok(output) => CommandResult::Continue(Some(output)), Err(error) => CommandResult::Error(error), } } } } pub(crate) fn create(package: &str) -> Box<dyn Command> { Box::new(CommandImpl { package: package.to_string(), }) }