Interactive fzf session picker for OpenCode - browse, preview, and resume sessions. Forked from PEMessage/a0f7f299291a6fda9955adf3b1ea54be with input validation hardening.

opencode-fzf

#!/usr/bin/env bash

set -eu

export LC_ALL=C

# Color support
if [ -t 1 ]; then
    FFOP_COLORS="always"
else
    FFOP_COLORS="never"
fi

# ANSI color codes
if [ "$FFOP_COLORS" = "always" ]; then
    COLOR_ID='\033[1;36m'      # Cyan bold
    COLOR_TITLE='\033[0m'       # Default (no color)
    COLOR_TIME='\033[1;32m'     # Green bold
    COLOR_RESET='\033[0m'
    COLOR_NONE=''

    FMT_ID='"\033[1;36m"'
    FMT_TITLE='"\033[0m"'
    FMT_TIME='"\033[1;32m"'
    FMT_RESET='"\033[0m"'
    FMT_NONE='""'
else
    COLOR_ID=''
    COLOR_TITLE=''
    COLOR_TIME=''
    COLOR_RESET=''
    COLOR_NONE=''

    FMT_ID='""'
    FMT_TITLE='""'
    FMT_TIME='""'
    FMT_RESET='""'
    FMT_NONE='""'
fi

format_sessions() {
    awk -F'\t' -v home="$HOME" "{
        path = \$2
        gsub(home, \"~\", path)
        print $FMT_NONE \$1 $FMT_NONE \"\t\" $FMT_NONE path \"\t\" $FMT_TITLE \$3 $FMT_RESET \"\t\" $FMT_TIME \$4 $FMT_RESET
    }"
}


# Get sessions from database
list_sessions() {
    opencode db "SELECT id, directory, title, datetime(time_updated / 1000, 'unixepoch') FROM session WHERE title NOT LIKE '%subagent)' ORDER BY time_updated DESC" | tail -n +2 | format_sessions
}

# Validate session ID format (UUID-like: hex chars and dashes)
validate_session_id() {
    local id="$1"
    if ! [[ "$id" =~ ^[a-zA-Z0-9_-]+$ ]]; then
        echo "Invalid session ID format: $id" >&2
        exit 1
    fi
}

# Interactive selection with fzf
interactive_select() {
    local preview_window
    if [ "${COLUMNS:-80}" -lt 80 ]; then
        preview_window="down:50%"
    else
        preview_window="right:50%"
    fi

    fzf --ansi \
        --delimiter='\t' \
        --with-nth="{3} {4} @{2}" \
        --preview-window="$preview_window" \
        --preview="$0 session-print {1}" \
        --wrap=word \
        --exit-0 \
        --scheme history \
        --bind 'ctrl-d:preview-half-page-down,ctrl-u:preview-half-page-up,ctrl-g:preview-bottom,ctrl-t:preview-top' \
        --expect=alt-n \
        --header-first \
        --header="[New: Alt-n]  [Preview Scroll: Ctrl-d/u]  [Jump: Ctrl-g/t]"
}

expand_path() {
    local path="$1"
    if [[ "$path" == "~"* ]]; then
        path="${HOME}${path:1}"
    fi
    echo "$path"
}


cmd_session() {
    local selected
    selected="$(list_sessions | interactive_select)"
    if [ "$(echo "$selected" | head -n1)" = "alt-n" ] ; then
        echo "New opencode session"
        opencode
        exit 0
    fi

    session_id="$(echo "$selected" | cut -f 1 -d $'\t')"
    directory="$(echo "$selected" | cut -f 2 -d $'\t')"

    if [ -n "$session_id" ]; then
        validate_session_id "$session_id"
        echo "Select session: $session_id"
        echo "Change dir to: $directory"
        cd "$(expand_path "$directory")"
        opencode -s "$session_id"
    else
        echo "No session selected" >&2
        exit 1
    fi
}

print_session() {
    local session_id="$1"
    validate_session_id "$session_id"

    RESET='\x1b[0m'
    AGENT_COLOR='\x1b[32m'
    USER_COLOR='\x1b[36m'
    META_COLOR='\x1b[33m'

    opencode db "
        SELECT data FROM part
            WHERE session_id='${session_id}'
            AND json_extract(data, '$.type') = 'text'
            AND (json_extract(data, '$.synthetic') IS NULL OR json_extract(data, '$.synthetic') = 0)
            ORDER BY time_updated
        " --format json |
    jq -r '.[] | .data | fromjson | if .time != null then "@Agent@: " + .text else "@User@: " + .text end' |
    awk -v reset="$RESET" \
    -v agent_color="$AGENT_COLOR" \
    -v user_color="$USER_COLOR" '
        /^@Agent@:/ {
            sub(/^@Agent@:/, "")
            current_color = agent_color
            print reset "---"
            printf agent_color "Agent:" reset
            print agent_color $0
            next
        }
        /^@User@:/ {
            sub(/^@User@:/, "")
            current_color = user_color
            print reset "---"
            printf user_color "User:" reset
            print user_color $0
            next
        }
        {
            # For lines without prefix, use the current_color
            print current_color $0 reset
        }
    '
    opencode db "SELECT * FROM session WHERE id='${session_id}'" --format=json |
        awk -v reset="$RESET" \
        -v meta_color="$META_COLOR" '
            {
                print meta_color $0 reset
            }
        ' # awk end
}

cmd_session_print() {
    local session_id="${1:-}"

    if [ -z "$session_id" ]; then
        echo "Usage: $0 session-print <session-id>" >&2
        echo "Get session info from fzf: $0 session-print \$(opencode session | cut -f1)" >&2
        exit 1
    fi

    print_session "$session_id"
}

main() {
    local cmd="${1:-session}"

    case "$cmd" in
        session)
            cmd_session
            ;;
        session-print)
            cmd_session_print "${2:-}"
            ;;
        *)
            echo "Unknown command: $cmd" >&2
            echo "Run '$0 help' for usage information" >&2
            exit 1
            ;;
    esac
}

main "$@"