#!/bin/bash
#
# GnommoEditor - Code-first video editing pipeline
#
# Usage:
#   gnommo.sh -p <project>              Render project
#   gnommo.sh -p <project> import       Generate slides.json from image files
#   gnommo.sh -p <project> validate     Validate only
#   gnommo.sh -p <project> preprocess   Apply video preprocessing filters
#   gnommo.sh -p <project> transcribe   Transcribe video
#   gnommo.sh -p <project> align        Align markers to transcript
#   gnommo.sh -p <project> all          Full pipeline: transcribe → align → render
#

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
VENV_PYTHON="$SCRIPT_DIR/venv/bin/python"

# Check for venv
if [[ ! -f "$VENV_PYTHON" ]]; then
    echo "Error: Virtual environment not found at $SCRIPT_DIR/venv"
    echo "Create it with: python -m venv venv && ./venv/bin/pip install openai-whisper"
    exit 1
fi

# Parse arguments
PROJECT=""
COMMAND="render"
VERBOSE=""
FORCE=""

usage() {
    echo "Usage: gnommo.sh -p <project> [command] [options]"
    echo ""
    echo "Commands:"
    echo "  render      Render video (default)"
    echo "  import      Generate slides.json from image files"
    echo "  validate    Validate project only"
    echo "  preprocess  Apply video preprocessing filters (chroma key, etc.)"
    echo "  transcribe  Transcribe video audio"
    echo "  align       Align manuscript to transcript"
    echo "  all         Full pipeline: transcribe → align → render"
    echo ""
    echo "Options:"
    echo "  -p <dir>    Project directory (required)"
    echo "  -v          Verbose output"
    echo "  -f          Force overwrite existing files"
    echo "  -h          Show this help"
    echo ""
    echo "Examples:"
    echo "  gnommo.sh -p video1              # Render video1 project"
    echo "  gnommo.sh -p video1 import       # Generate slides.json"
    echo "  gnommo.sh -p video1 import -f    # Force overwrite slides.json"
    echo "  gnommo.sh -p video1 validate     # Validate only"
    echo "  gnommo.sh -p video1 all          # Full pipeline"
    exit 0
}

while [[ $# -gt 0 ]]; do
    case $1 in
        -p|--project)
            PROJECT="$2"
            shift 2
            ;;
        -v|--verbose)
            VERBOSE="-v"
            shift
            ;;
        -f|--force)
            FORCE="-f"
            shift
            ;;
        -h|--help)
            usage
            ;;
        import|validate|render|preprocess|transcribe|align|all)
            COMMAND="$1"
            shift
            ;;
        *)
            echo "Unknown option: $1"
            usage
            ;;
    esac
done

# Validate project argument
if [[ -z "$PROJECT" ]]; then
    echo "Error: Project directory required (-p <project>)"
    echo ""
    usage
fi

if [[ ! -d "$PROJECT" ]]; then
    echo "Error: Project directory not found: $PROJECT"
    exit 1
fi

if [[ ! -f "$PROJECT/project.json" ]]; then
    echo "Error: project.json not found in $PROJECT"
    exit 1
fi

# Run commands using new CLI interface
run_gnommo() {
    "$VENV_PYTHON" -m gnommo -p "$PROJECT" -a "$1" $VERBOSE
}

run_gnommo_import() {
    "$VENV_PYTHON" -m gnommo -p "$PROJECT" -a validate -i $FORCE $VERBOSE
}

case $COMMAND in
    import)
        echo "=== Importing assets for $PROJECT ==="
        run_gnommo_import
        ;;

    validate)
        echo "=== Validating $PROJECT ==="
        run_gnommo validate
        ;;

    transcribe)
        echo "=== Transcribing $PROJECT ==="
        run_gnommo transcribe
        ;;

    align)
        echo "=== Aligning $PROJECT ==="
        run_gnommo align
        ;;

    render)
        echo "=== Rendering $PROJECT ==="
        run_gnommo render
        ;;

    preprocess)
        echo "=== Preprocessing $PROJECT ==="
        run_gnommo preprocess
        ;;

    all)
        echo "=== Full Pipeline: $PROJECT ==="
        run_gnommo all
        ;;

    *)
        echo "Unknown command: $COMMAND"
        usage
        ;;
esac