#!/usr/bin/env bash
# args_json: {"type":"object","required":["action"],"properties":{"action":{"type":"string","description":"list|current|switch|create|remove"},"name":{"type":"string","description":"Activity name or ID"}}}
# ollie:prompt
# ## gui_activities
#
# Manage KDE Plasma Activities.
#
# **Args**: `[action]` or `[action, name_or_id]`
# - Actions: `list`, `current`, `switch`, `create`, `remove`
#
# ```
# gui_activities(action="list")
# gui_activities(action="switch", name="Development")
# ```
# ollie:end
set -euo pipefail

SERVICE="org.kde.ActivityManager"
OBJ_PATH="/ActivityManager/Activities"
IFACE="org.kde.ActivityManager.Activities"

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

cmd=$(arg_get "action" "list")
name=$(arg_get "name" "")

case "$cmd" in
    list)
        # List all activities with their names and states
        ids=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.ListActivities" 2>/dev/null | \
            sed "s/^(\[//;s/\],)$//;s/'//g;s/, /\n/g")

        if [ -z "$ids" ]; then
            echo "ERROR: cannot list activities (ActivityManager not running?)" >&2
            exit 1
        fi

        current=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.CurrentActivity" 2>/dev/null | \
            sed "s/^('//;s/',)$//")

        echo "ID	STATE	NAME"
        while IFS= read -r id; do
            [ -z "$id" ] && continue
            name=$(gdbus call --session --dest "$SERVICE" \
                --object-path "$OBJ_PATH" \
                --method "$IFACE.ActivityName" "$id" 2>/dev/null | \
                sed "s/^('//;s/',)$//")
            if [ "$id" = "$current" ]; then
                state="active"
            else
                state="stopped"
            fi
            echo "$id	$state	$name"
        done <<< "$ids"
        ;;
    current)
        id=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.CurrentActivity" 2>/dev/null | \
            sed "s/^('//;s/',)$//")
        name=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.ActivityName" "$id" 2>/dev/null | \
            sed "s/^('//;s/',)$//")
        echo "$id	$name"
        ;;
    switch)
        if [ $# -lt 2 ]; then echo '{"schema": {"type": "array", "items": [{"name": "action", "type": "string", "description": "list|current|switch|create|remove", "required": false}, {"name": "name_or_id", "type": "string", "description": "Activity name or ID (for switch/create/remove)", "required": false}], "examples": [["list"], ["switch", "Development"]]}}'; exit 1; fi
        target="$name"

        # Try as ID first
        result=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.SetCurrentActivity" "$target" 2>/dev/null) && {
            echo "switched to: $target"
            exit 0
        }

        # Search by name
        ids=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.ListActivities" 2>/dev/null | \
            sed "s/^(\[//;s/\],)$//;s/'//g;s/, /\n/g")

        while IFS= read -r id; do
            [ -z "$id" ] && continue
            name=$(gdbus call --session --dest "$SERVICE" \
                --object-path "$OBJ_PATH" \
                --method "$IFACE.ActivityName" "$id" 2>/dev/null | \
                sed "s/^('//;s/',)$//")
            if echo "$name" | grep -qi "$target"; then
                gdbus call --session --dest "$SERVICE" \
                    --object-path "$OBJ_PATH" \
                    --method "$IFACE.SetCurrentActivity" "$id" >/dev/null
                echo "switched to: $name ($id)"
                exit 0
            fi
        done <<< "$ids"

        echo "ERROR: no activity matching '$target'" >&2
        exit 1
        ;;
    create)
        if [ $# -lt 2 ]; then echo '{"schema": {"type": "array", "items": [{"name": "action", "type": "string", "description": "list|current|switch|create|remove", "required": false}, {"name": "name_or_id", "type": "string", "description": "Activity name or ID (for switch/create/remove)", "required": false}], "examples": [["list"], ["switch", "Development"]]}}'; exit 1; fi
        name="$name"
        id=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.AddActivity" "$name" 2>/dev/null | \
            sed "s/^('//;s/',)$//")
        echo "created: $id ($name)"
        ;;
    remove)
        if [ $# -lt 2 ]; then echo '{"schema": {"type": "array", "items": [{"name": "action", "type": "string", "description": "list|current|switch|create|remove", "required": false}, {"name": "name_or_id", "type": "string", "description": "Activity name or ID (for switch/create/remove)", "required": false}], "examples": [["list"], ["switch", "Development"]]}}'; exit 1; fi
        target="$name"

        # Try as ID directly
        gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.RemoveActivity" "$target" 2>/dev/null && {
            echo "removed: $target"
            exit 0
        }

        # Search by name
        ids=$(gdbus call --session --dest "$SERVICE" \
            --object-path "$OBJ_PATH" \
            --method "$IFACE.ListActivities" 2>/dev/null | \
            sed "s/^(\[//;s/\],)$//;s/'//g;s/, /\n/g")

        while IFS= read -r id; do
            [ -z "$id" ] && continue
            name=$(gdbus call --session --dest "$SERVICE" \
                --object-path "$OBJ_PATH" \
                --method "$IFACE.ActivityName" "$id" 2>/dev/null | \
                sed "s/^('//;s/',)$//")
            if echo "$name" | grep -qi "$target"; then
                gdbus call --session --dest "$SERVICE" \
                    --object-path "$OBJ_PATH" \
                    --method "$IFACE.RemoveActivity" "$id" >/dev/null
                echo "removed: $name ($id)"
                exit 0
            fi
        done <<< "$ids"

        echo "ERROR: no activity matching '$target'" >&2
        exit 1
        ;;
    *)
        echo '{"schema": {"type": "array", "items": [{"name": "action", "type": "string", "description": "list|current|switch|create|remove", "required": false}, {"name": "name_or_id", "type": "string", "description": "Activity name or ID (for switch/create/remove)", "required": false}], "examples": [["list"], ["switch", "Development"]]}}' >&2
        exit 1
        ;;
esac