claude-session-select.sh

#!/bin/bash
# Claude Session Selector - Interactive session selection and restore

set -euo pipefail

# Get the project directory for current path
PROJECT_DIR="$HOME/.claude/projects"
CURRENT_DIR=$(pwd)
PROJECT_PATH=$(echo "$CURRENT_DIR" | sed -Ee 's/[_\/]/-/g')
SESSION_DIR="$PROJECT_DIR/$PROJECT_PATH"

# Check if the session directory exists
if [ ! -d "$SESSION_DIR" ]; then
    echo "Error: No Claude sessions found for current directory: $CURRENT_DIR"
    echo "Session directory not found: $SESSION_DIR"
    exit 1
fi

# Function to format timestamp
format_timestamp() {
    local timestamp="$1"
    # Convert ISO timestamp to human-readable format
    date -j -f "%Y-%m-%dT%H:%M:%S" "${timestamp%%.*}" "+%Y-%m-%d %H:%M" 2>/dev/null || echo "$timestamp"
}

# Function to extract session info from jsonl file
get_session_info() {
    local file="$1"
    local session_id
    session_id=$(basename "$file" .jsonl)

    # Get last user message as summary
    local summary
    summary=$(jq -r 'select(.type == "user") | .message.content | gsub("\n"; " ")' "$file" 2>/dev/null | tail -n 1)

    # Get last timestamp
    local last_timestamp
    last_timestamp=$(jq -r 'select(.timestamp) | .timestamp' "$file" 2>/dev/null | tail -1)

    [ -z "$summary" ] && return
    [ -z "$last_timestamp" ] && return

    # Format timestamp for display
    local formatted_time
    formatted_time=$(format_timestamp "$last_timestamp")

    printf "%s\t%s\t%s\t%s\t%s\n" "${last_timestamp}" "${session_id}" "${formatted_time}" "${summary}" "$file"
}

# Build session list
get_session_list() {
    local session_dir="$1"
    for jsonl_file in "$session_dir"/*.jsonl; do
        [ -f "$jsonl_file" ] || continue
        get_session_info "$jsonl_file"
    done
}

session_list=$(get_session_list "$SESSION_DIR" | sort -r)

# Use sk (skim) for interactive selection
selected=$(echo -e "$session_list" | sk \
    --no-sort \
    --delimiter '\t' \
    --nth 2,3,4 \
    --with-nth 3,4 \
    --prompt 'Session> ' \
    --layout 'reverse' \
    --preview 'lines=${FZF_PREVIEW_LINES:-${LINES:-30}}; cat {5} | jq -r "
        select(.type == \"user\" or .type == \"assistant\") |
        if .type == \"user\" then
            \"👤: \" + .message.content
        elif .type == \"assistant\" then
            if .message.content[0].type == \"text\" then
                \"🤖: \" + .message.content[0].text
            elif .message.content[0].type == \"thinking\" then
                \"💭 Thinking...\"
            elif .message.content[0].type == \"tool_use\" then
                   if .message.content[0].name == \"TodoWrite\" then
                        \"📋 TODO List:\\n\" + (
                            .message.content[0].input.todos |
                            map(\"  \" + (
                                if .status == \"completed\" then \"✅\"
                                elif .status == \"in_progress\" then \"🔄\"
                                else \"⏳\"
                                end
                            ) + \" \" + .content) |
                            join(\"\\n\")
                        )
                   elif .message.content[0].name == \"Task\" then
                        \"🔧 Task: \" + .message.content[0].input.description
                   elif .message.content[0].name == \"Bash\" then
                        \"💻 Cmd: \" + .message.content[0].input.command
                   elif .message.content[0].name == \"Glob\" then
                        \"🔍 Glob: \" + .message.content[0].input.pattern + (if .message.content[0].input.path then \" in \" + .message.content[0].input.path else \"\" end)
                   elif .message.content[0].name == \"Grep\" then
                        \"🔎 Grep: \" + .message.content[0].input.pattern + (if .message.content[0].input.path then \" in \" + .message.content[0].input.path else \"\" end)
                   elif .message.content[0].name == \"LS\" then
                        \"📁 LS: \" + .message.content[0].input.path
                   elif .message.content[0].name == \"ExitPlanMode\" then
                        \"✅ Exit Plan Mode\"
                   elif .message.content[0].name == \"Read\" then
                        \"📖 Read: \" + .message.content[0].input.file_path
                   elif .message.content[0].name == \"Edit\" then
                        \"✏️ Edit: \" + .message.content[0].input.file_path
                   elif .message.content[0].name == \"MultiEdit\" then
                        \"📝 MultiEdit: \" + .message.content[0].input.file_path + \" (\" + (.message.content[0].input.edits | length | tostring) + \" edits)\"
                   elif .message.content[0].name == \"Write\" then
                        \"💾 Write: \" + .message.content[0].input.file_path
                   elif .message.content[0].name == \"WebFetch\" then
                        \"🌐 WebFetch: \" + .message.content[0].input.url
                   elif .message.content[0].name == \"WebSearch\" then
                        \"🔍 Search: \" + .message.content[0].input.query
                   else
                        \"[\" + .message.content[0].name + \"] \" + (.message.content[0].input | tostring)
                   end
            else
                .message.content | tostring
            end
        else
            empty
        end" 2>/dev/null | sed "s/<command-name>\([^<]*\)<\/command-name>/📌 Command: \1/g; s/<command-args>\([^<]*\)<\/command-args>/\n📝 Args: \1/g" | perl -pe '"'"'s/\*\*([^*]+)\*\*/\033[1m$1\033[0m/g'"'"' | tail -n $((lines - 2))' \
    --preview-window 'right:60%:wrap' \
    --ansi)

# Extract session ID from selection
if [ -n "$selected" ]; then
    session_id=$(echo "$selected" | awk -F'\t' '{print $2}')
    if [ "${1:-}" == "-s" ] ; then
        echo "$session_id"
        exit 0
    fi
    claude -r "$session_id"
else
    exit 0
fi