Function u64_of 

pub fn u64_of(v: &Value, keys: &[&str]) -> Option<u64>

What: Extract an unsigned 64-bit integer by trying multiple keys and representations.

Inputs:

• v: JSON value to extract from.
• keys: Array of candidate keys to try in order.

Output:

• Returns Some(u64) if a valid value is found, or None if no usable value is found.

Details:

• Accepts any of the following representations for the first matching key:
  • JSON u64
  • JSON i64 convertible to u64
  • String that parses as u64
• Tries keys in the order provided and returns the first match.
• Returns None if no key maps to a convertible value.

Examples

use pacsea::util::u64_of;
use serde_json::json;

// Extracting the vote count from an AUR package info (can be a number or a string)
let aur_vote_data = json!({
    "NumVotes": 123,
    "Popularity": "45.67"
});
assert_eq!(u64_of(&aur_vote_data, &["NumVotes", "Votes"]), Some(123));

// Extracting the first seen timestamp (often a string in JSON APIs)
let timestamp_data = json!({
    "FirstSubmitted": "1672531200",
    "LastModified": 1672617600
});
assert_eq!(u64_of(&timestamp_data, &["FirstSubmitted", "Submitted"]), Some(1672531200));
assert_eq!(u64_of(&timestamp_data, &["LastModified", "Modified"]), Some(1672617600));

// Returns None for negative numbers or if no convertible value is found
let negative_data = json!({"OutOfDate": -1});
assert_eq!(u64_of(&negative_data, &["OutOfDate"]), None);