#!/bin/bash
# =============================================================================
# switch-quality.sh - Basculer la qualite d'image de photobooth-app
# =============================================================================
# Usage:
#   bash switch-quality.sh high    # Qualite haute (4608x3072, quality 100)
#   bash switch-quality.sh low     # Qualite basse (2304x1536, quality 90)
#   bash switch-quality.sh status  # Afficher la config actuelle
# =============================================================================

set -uo pipefail

API_URL="http://127.0.0.1:8083"
API_USER="admin"
API_PASS="PhotoBooth2026!"

GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

# --- Obtenir le token ---
get_token() {
    curl -s -X POST "${API_URL}/api/admin/auth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${API_USER}&password=${API_PASS}" \
        | python3 -c 'import sys,json;print(json.load(sys.stdin)["access_token"])'
}

# --- Lire la config actuelle ---
get_config() {
    local token="$1"
    curl -s "${API_URL}/api/admin/config/app" \
        -H "Authorization: Bearer ${token}"
}

# --- Appliquer une config ---
set_config() {
    local token="$1"
    local config="$2"
    curl -s -X PATCH "${API_URL}/api/admin/config/app" \
        -H "Authorization: Bearer ${token}" \
        -H "Content-Type: application/json" \
        -d "${config}"
}

# --- Afficher le statut ---
show_status() {
    local token
    token=$(get_token)
    local config
    config=$(get_config "$token")

    local capture_w capture_h preview_w preview_h full_still preview_still quality
    capture_w=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["backends"]["group_backends"][0]["backend_config"]["CAPTURE_CAM_RESOLUTION_WIDTH"])')
    capture_h=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["backends"]["group_backends"][0]["backend_config"]["CAPTURE_CAM_RESOLUTION_HEIGHT"])')
    preview_w=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["backends"]["group_backends"][0]["backend_config"]["PREVIEW_CAM_RESOLUTION_WIDTH"])')
    preview_h=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["backends"]["group_backends"][0]["backend_config"]["PREVIEW_CAM_RESOLUTION_HEIGHT"])')
    full_still=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["mediaprocessing"]["full_still_length"])')
    preview_still=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["mediaprocessing"]["preview_still_length"])')
    quality=$(echo "$config" | python3 -c 'import sys,json;c=json.load(sys.stdin);print(c["backends"]["group_backends"][0]["backend_config"]["original_still_quality"])')

    echo "=== Configuration actuelle ==="
    echo "  Capture:       ${capture_w}x${capture_h}"
    echo "  Preview:       ${preview_w}x${preview_h}"
    echo "  Full still:    ${full_still}"
    echo "  Preview still: ${preview_still}"
    echo "  JPEG quality:  ${quality}"

    if [ "$capture_w" -ge 4000 ]; then
        echo -e "  Mode:          ${GREEN}HAUTE QUALITE${NC}"
    else
        echo -e "  Mode:          ${YELLOW}BASSE QUALITE (economie RAM)${NC}"
    fi
}

# --- Appliquer haute qualite ---
set_high() {
    local token
    token=$(get_token)

    echo "Passage en HAUTE QUALITE..."

    # Config backends (camera)
    set_config "$token" '{
        "backends": {
            "group_backends": [{
                "enabled": true,
                "description": "pi camera module V3",
                "backend_config": {
                    "orientation": "1: 0°",
                    "backend_type": "Picamera2",
                    "camera_num": 0,
                    "CAPTURE_CAM_RESOLUTION_WIDTH": 4608,
                    "CAPTURE_CAM_RESOLUTION_HEIGHT": 3072,
                    "PREVIEW_CAM_RESOLUTION_WIDTH": 2304,
                    "PREVIEW_CAM_RESOLUTION_HEIGHT": 1536,
                    "LIVEVIEW_RESOLUTION_WIDTH": 750,
                    "LIVEVIEW_RESOLUTION_HEIGHT": 500,
                    "framerate_still_mode": 20,
                    "framerate_video_mode": 25,
                    "frame_skip_count": 4,
                    "optimized_lowlight_short_exposure": false,
                    "videostream_quality": "MEDIUM",
                    "original_still_quality": 100
                }
            }]
        },
        "mediaprocessing": {
            "full_still_length": 4608,
            "preview_still_length": 2304,
            "thumbnail_still_length": 960
        }
    }' > /dev/null

    echo -e "${GREEN}HAUTE QUALITE activee${NC}"
    echo "  Capture: 4608x3072, Quality: 100"
    echo "  ATTENTION: consomme plus de RAM"
    echo ""
    echo "Redemarrage de photobooth-app necessaire :"
    echo "  systemctl --user restart photobooth-app"
}

# --- Appliquer basse qualite ---
set_low() {
    local token
    token=$(get_token)

    echo "Passage en BASSE QUALITE (economie RAM)..."

    set_config "$token" '{
        "backends": {
            "group_backends": [{
                "enabled": true,
                "description": "pi camera module V3",
                "backend_config": {
                    "orientation": "1: 0°",
                    "backend_type": "Picamera2",
                    "camera_num": 0,
                    "CAPTURE_CAM_RESOLUTION_WIDTH": 2304,
                    "CAPTURE_CAM_RESOLUTION_HEIGHT": 1536,
                    "PREVIEW_CAM_RESOLUTION_WIDTH": 1152,
                    "PREVIEW_CAM_RESOLUTION_HEIGHT": 768,
                    "LIVEVIEW_RESOLUTION_WIDTH": 750,
                    "LIVEVIEW_RESOLUTION_HEIGHT": 500,
                    "framerate_still_mode": 20,
                    "framerate_video_mode": 25,
                    "frame_skip_count": 4,
                    "optimized_lowlight_short_exposure": false,
                    "videostream_quality": "MEDIUM",
                    "original_still_quality": 90
                }
            }]
        },
        "mediaprocessing": {
            "full_still_length": 2304,
            "preview_still_length": 1200,
            "thumbnail_still_length": 480
        }
    }' > /dev/null

    echo -e "${YELLOW}BASSE QUALITE activee${NC}"
    echo "  Capture: 2304x1536, Quality: 90"
    echo "  Economie RAM optimale"
    echo ""
    echo "Redemarrage de photobooth-app necessaire :"
    echo "  systemctl --user restart photobooth-app"
}

# --- Main ---
case "${1:-status}" in
    high|haute|hq)
        set_high
        ;;
    low|basse|lq)
        set_low
        ;;
    status|info)
        show_status
        ;;
    *)
        echo "Usage: $0 {high|low|status}"
        echo "  high   - Haute qualite (4608x3072, quality 100)"
        echo "  low    - Basse qualite (2304x1536, quality 90)"
        echo "  status - Afficher la configuration actuelle"
        exit 1
        ;;
esac