#!/usr/bin/env bash
# ollie:parallel read
# ollie:tier cold
# args_json: {"type":"object","required":["query"],"properties":{"query":{"type":"string","description":"Search keyword or phrase"}}}
# ollie:prompt
# ## memory_recall
#
# Search stored memories for relevant context.
#
# **Trigger condition**: ALWAYS recall before exploring code or starting work on a task. Memory is a first-class source of context — check it before reading files or running commands.
#
# **Calling convention**:
# ```
# memory_recall(query="keyword")
# ```
# - `query`: single keyword or short term. Prefer single keywords over phrases.
#
# **Returns**: matching memory files.
#
# **Constraints**:
# - Recall at the start of a topic, not mid-task.
# - If recall returns nothing relevant, proceed without it.
# ollie:end

source "$(dirname "$0")/_lib/args.sh"

query=$(arg_require "query")

mem_dir="${XDG_CONFIG_HOME:-$HOME/.config}/ollie/memory"

[ ! -d "$mem_dir" ] && echo "error: memory directory does not exist: $mem_dir" && exit 1

max_files=10
max_lines=50
stale_days=14
now=$(date +%s)

matches=$(grep -ril --include='*.md' "$query" "$mem_dir" 2>/dev/null)
[ -z "$matches" ] && echo "no matches for: $query" && exit 0

total=$(echo "$matches" | wc -l)
count=0

while IFS= read -r file; do
    count=$((count + 1))
    [ $count -gt $max_files ] && echo "(showing $max_files of $total matched files)" && break

    fname=$(basename "$file")
    ts=${fname%%__*}
    if [[ $ts =~ ^([0-9]{4})([0-9]{2})([0-9]{2})T ]]; then
        fdate=$(date -d "${BASH_REMATCH[1]}-${BASH_REMATCH[2]}-${BASH_REMATCH[3]}" +%s 2>/dev/null)
        [ -n "$fdate" ] && age_days=$(( (now - fdate) / 86400 )) || age_days=0
    else
        age_days=0
    fi

    [ $age_days -ge $stale_days ] && status="STALE (${age_days}d)" || status="fresh"

    echo "=== $fname [$status] ==="
    awk -v max="$max_lines" 'NR<=max{print} NR>max{over++} END{if(over) printf "... (%d lines total, showing first %d)\n", NR, max}' "$file" 2>/dev/null || echo "error: could not read $file"
    echo
done <<< "$matches"