// Dynamic admin management – /addadmin and /deladmin commands.
// These store admins in the DB so they persist across restarts.

package plugins

import (
	"fmt"
	"strconv"
	"strings"

	"github.com/Jisin0/Go-Filter-Bot/utils"
	"github.com/PaulSonOfLars/gotgbot/v2"
	"github.com/PaulSonOfLars/gotgbot/v2/ext"
)

// AddAdmin handles the /addadmin command – adds a dynamic admin.
//
//nolint:errcheck
func AddAdmin(bot *gotgbot.Bot, ctx *ext.Context) error {
	if !utils.IsAdmin(ctx.EffectiveUser.Id) {
		ctx.EffectiveMessage.Reply(bot, "⛔ Only bot admins can use this command!", &gotgbot.SendMessageOpts{})
		return nil
	}

	msg := ctx.Message
	var (
		targetID int64
		err      error
	)

	if msg.ReplyToMessage != nil && msg.ReplyToMessage.From != nil {
		targetID = msg.ReplyToMessage.From.Id
	} else {
		args := strings.SplitN(msg.Text, " ", 2)
		if len(args) < 2 {
			msg.Reply(bot, "Usage: <code>/addadmin &lt;user_id&gt;</code> or reply to a user's message", &gotgbot.SendMessageOpts{ParseMode: gotgbot.ParseModeHTML})
			return nil
		}
		targetID, err = strconv.ParseInt(strings.TrimSpace(args[1]), 10, 64)
		if err != nil {
			msg.Reply(bot, "❌ Invalid user ID.", &gotgbot.SendMessageOpts{})
			return nil
		}
	}

	if err := DB.AddDynamicAdmin(targetID); err != nil {
		msg.Reply(bot, fmt.Sprintf("❌ Failed to add admin: %v", err), &gotgbot.SendMessageOpts{})
		return nil
	}

	msg.Reply(bot,
		fmt.Sprintf("✅ User <code>%d</code> has been added as a bot admin.\n<i>This persists across restarts.</i>", targetID),
		&gotgbot.SendMessageOpts{ParseMode: gotgbot.ParseModeHTML},
	)
	return nil
}

// DelAdmin handles the /deladmin command – removes a dynamic admin.
//
//nolint:errcheck
func DelAdmin(bot *gotgbot.Bot, ctx *ext.Context) error {
	if !utils.IsAdmin(ctx.EffectiveUser.Id) {
		ctx.EffectiveMessage.Reply(bot, "⛔ Only bot admins can use this command!", &gotgbot.SendMessageOpts{})
		return nil
	}

	msg := ctx.Message
	var (
		targetID int64
		err      error
	)

	if msg.ReplyToMessage != nil && msg.ReplyToMessage.From != nil {
		targetID = msg.ReplyToMessage.From.Id
	} else {
		args := strings.SplitN(msg.Text, " ", 2)
		if len(args) < 2 {
			msg.Reply(bot, "Usage: <code>/deladmin &lt;user_id&gt;</code> or reply to a user's message", &gotgbot.SendMessageOpts{ParseMode: gotgbot.ParseModeHTML})
			return nil
		}
		targetID, err = strconv.ParseInt(strings.TrimSpace(args[1]), 10, 64)
		if err != nil {
			msg.Reply(bot, "❌ Invalid user ID.", &gotgbot.SendMessageOpts{})
			return nil
		}
	}

	if err := DB.RemoveDynamicAdmin(targetID); err != nil {
		msg.Reply(bot, fmt.Sprintf("❌ Failed to remove admin: %v", err), &gotgbot.SendMessageOpts{})
		return nil
	}

	msg.Reply(bot,
		fmt.Sprintf("✅ User <code>%d</code> has been removed from the admin list.", targetID),
		&gotgbot.SendMessageOpts{ParseMode: gotgbot.ParseModeHTML},
	)
	return nil
}

// ListAdmins handles the /admins command – shows all current admins.
//
//nolint:errcheck
func ListAdmins(bot *gotgbot.Bot, ctx *ext.Context) error {
	if !utils.IsAdmin(ctx.EffectiveUser.Id) {
		ctx.EffectiveMessage.Reply(bot, "⛔ Only bot admins can use this command!", &gotgbot.SendMessageOpts{})
		return nil
	}

	text := "<b>👑 Bot Admins</b>\n\n"

	// Static admins from env
	from_env := DB.GetBotSettingsAdminsEnv()
	if len(from_env) > 0 {
		text += "<u>From ENV (permanent):</u>\n"
		for i, id := range from_env {
			text += fmt.Sprintf("%d. <code>%d</code>\n", i+1, id)
		}
		text += "\n"
	}

	// Dynamic admins from DB
	dynamic := DB.GetDynamicAdmins()
	if len(dynamic) > 0 {
		text += "<u>Dynamic (added via /addadmin):</u>\n"
		for i, id := range dynamic {
			text += fmt.Sprintf("%d. <code>%d</code>\n", i+1, id)
		}
	} else {
		text += "<i>No dynamic admins added.</i>"
	}

	text += "\n\n<i>Use /addadmin and /deladmin to manage dynamic admins.</i>"
	ctx.EffectiveMessage.Reply(bot, text, &gotgbot.SendMessageOpts{ParseMode: gotgbot.ParseModeHTML})
	return nil
}