difflore-core 0.1.0

Core library for the difflore CLI — rule store, retrieval, MCP server, hooks, cloud sync. Not intended for direct use; depend on `difflore-cli` instead.
Documentation 
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use super::events::ObservationEvent;
use crate::domain::glob_match::{GlobErrorPolicy, glob_match};
use sha2::{Digest, Sha256};

pub const RECENT_RULE_FIRE_WINDOW_MS: i64 = 60_000;

pub fn event_content_hash(event: &ObservationEvent) -> String {
    let payload = serde_json::to_string(event).unwrap_or_default();
    let digest = Sha256::digest(payload.as_bytes());
    let mut out = String::with_capacity(16);
    for byte in digest.iter().take(8) {
        out.push_str(&format!("{byte:02x}"));
    }
    out
}

/// Decide whether an observed `file_path` is in scope for a rule whose
/// `file_patterns_json` is a JSON glob array. Absent / empty / `[]`
/// patterns are universal. Malformed JSON or an unbuildable glob set
/// drop the rule: attribution must not credit an unproven match.
pub(super) fn file_patterns_match(file_patterns_json: Option<&str>, file_path: &str) -> bool {
    glob_match(file_patterns_json, file_path, GlobErrorPolicy::Drop)
}