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use std::collections::HashSet;
use super::{CollapsibleTree, EntryKind, FlatEntry, ValueType};
pub(crate) struct FlattenContext<'a> {
pub is_last_stack: &'a mut Vec<bool>,
pub expanded_paths: &'a HashSet<String>,
pub entries: &'a mut Vec<FlatEntry>,
}
impl CollapsibleTree {
pub(crate) fn collect_expandable_paths(
value: &serde_json::Value,
path: &str,
) -> HashSet<String> {
let mut paths = HashSet::new();
match value {
serde_json::Value::Object(map) if !map.is_empty() => {
paths.insert(path.to_string());
for (key, val) in map {
let child = if path.is_empty() {
key.clone()
} else {
format!("{}.{}", path, key)
};
paths.extend(Self::collect_expandable_paths(val, &child));
}
}
serde_json::Value::Array(arr) if !arr.is_empty() => {
paths.insert(path.to_string());
for (i, item) in arr.iter().enumerate() {
let child = format!("{}[{}]", path, i);
paths.extend(Self::collect_expandable_paths(item, &child));
}
}
_ => {}
}
paths
}
pub fn expand_to_depth(&mut self, max_depth: usize) {
self.expanded_paths = Self::collect_expandable_paths_to_depth(&self.root, "", 0, max_depth);
}
fn collect_expandable_paths_to_depth(
value: &serde_json::Value,
path: &str,
current_depth: usize,
max_depth: usize,
) -> HashSet<String> {
let mut paths = HashSet::new();
match value {
serde_json::Value::Object(map) if !map.is_empty() => {
paths.insert(path.to_string());
if current_depth < max_depth {
for (key, val) in map {
let child = if path.is_empty() {
key.clone()
} else {
format!("{}.{}", path, key)
};
paths.extend(Self::collect_expandable_paths_to_depth(
val,
&child,
current_depth + 1,
max_depth,
));
}
}
}
serde_json::Value::Array(arr) if !arr.is_empty() => {
paths.insert(path.to_string());
if current_depth < max_depth {
for (i, item) in arr.iter().enumerate() {
let child = format!("{}[{}]", path, i);
paths.extend(Self::collect_expandable_paths_to_depth(
item,
&child,
current_depth + 1,
max_depth,
));
}
}
}
_ => {}
}
paths
}
pub fn flatten(&self) -> Vec<FlatEntry> {
let mut entries = Vec::new();
let mut is_last_stack = Vec::new();
let mut ctx = FlattenContext {
is_last_stack: &mut is_last_stack,
expanded_paths: &self.expanded_paths,
entries: &mut entries,
};
Self::flatten_node(
&self.root,
"",
0,
self.show_root,
&self.root_label,
&mut ctx,
);
entries
}
pub(crate) fn flatten_node(
value: &serde_json::Value,
path: &str,
depth: usize,
render_header: bool,
label_override: &str,
ctx: &mut FlattenContext,
) {
match value {
serde_json::Value::Object(map) if !map.is_empty() => {
let is_expanded = ctx.expanded_paths.contains(path) || !render_header;
let count = map.len();
let label = if !label_override.is_empty() {
label_override.to_string()
} else {
path.to_string()
};
let count_str = format!("{{{}}}", count);
if render_header {
ctx.entries.push(FlatEntry {
path: path.to_string(),
depth,
is_last_stack: ctx.is_last_stack.clone(),
kind: if is_expanded {
EntryKind::Expanded {
label: label.clone(),
count_str,
}
} else {
EntryKind::Collapsed {
label: label.clone(),
count_str,
}
},
});
}
if is_expanded {
let keys: Vec<_> = map.keys().collect();
for (i, key) in keys.iter().enumerate() {
let is_last = i == count - 1;
ctx.is_last_stack.push(is_last);
let child_path = if path.is_empty() {
(*key).clone()
} else {
format!("{}.{}", path, key)
};
Self::flatten_node(
&map[*key],
&child_path,
if render_header { depth + 1 } else { depth },
true,
"",
ctx,
);
ctx.is_last_stack.pop();
}
}
}
serde_json::Value::Array(arr) if !arr.is_empty() => {
let is_expanded = ctx.expanded_paths.contains(path) || !render_header;
let count = arr.len();
let label = if !label_override.is_empty() {
label_override.to_string()
} else {
path.to_string()
};
let count_str = format!("[{}]", count);
if render_header {
ctx.entries.push(FlatEntry {
path: path.to_string(),
depth,
is_last_stack: ctx.is_last_stack.clone(),
kind: if is_expanded {
EntryKind::Expanded {
label: label.clone(),
count_str,
}
} else {
EntryKind::Collapsed {
label: label.clone(),
count_str,
}
},
});
}
if is_expanded {
for (i, item) in arr.iter().enumerate() {
let is_last = i == count - 1;
ctx.is_last_stack.push(is_last);
let item_path = format!("{}[{}]", path, i);
let item_label = format!("[{}]", i);
match item {
serde_json::Value::Object(m) if !m.is_empty() => {
Self::flatten_node(
item,
&item_path,
if render_header { depth + 1 } else { depth },
true,
&item_label,
ctx,
);
}
serde_json::Value::Array(a) if !a.is_empty() => {
Self::flatten_node(
item,
&item_path,
if render_header { depth + 1 } else { depth },
true,
&item_label,
ctx,
);
}
_ => {
let (value_str, value_type) = format_primitive(item);
ctx.entries.push(FlatEntry {
path: item_path,
depth: if render_header { depth + 1 } else { depth },
is_last_stack: ctx.is_last_stack.clone(),
kind: EntryKind::Leaf {
key: item_label,
value: value_str,
value_type,
},
});
}
}
ctx.is_last_stack.pop();
}
}
}
serde_json::Value::Object(_) => {
ctx.entries.push(FlatEntry {
path: path.to_string(),
depth,
is_last_stack: ctx.is_last_stack.clone(),
kind: EntryKind::Leaf {
key: if !label_override.is_empty() {
label_override.to_string()
} else {
path.to_string()
},
value: "{}".to_string(),
value_type: ValueType::Null,
},
});
}
serde_json::Value::Array(_) => {
ctx.entries.push(FlatEntry {
path: path.to_string(),
depth,
is_last_stack: ctx.is_last_stack.clone(),
kind: EntryKind::Leaf {
key: if !label_override.is_empty() {
label_override.to_string()
} else {
path.to_string()
},
value: "[]".to_string(),
value_type: ValueType::Null,
},
});
}
_ => {
let (value_str, value_type) = format_primitive(value);
ctx.entries.push(FlatEntry {
path: path.to_string(),
depth,
is_last_stack: ctx.is_last_stack.clone(),
kind: EntryKind::Leaf {
key: if !label_override.is_empty() {
label_override.to_string()
} else {
path.to_string()
},
value: value_str,
value_type,
},
});
}
}
}
}
pub(crate) fn format_primitive(value: &serde_json::Value) -> (String, ValueType) {
match value {
serde_json::Value::String(s) => (format!("\"{}\"", s), ValueType::String),
serde_json::Value::Number(n) => (n.to_string(), ValueType::Number),
serde_json::Value::Bool(b) => (b.to_string(), ValueType::Boolean),
serde_json::Value::Null => ("null".to_string(), ValueType::Null),
_ => (value.to_string(), ValueType::String),
}
}