package cmd

import (
	"testing"

	"axenov/iptv-checker/app"
	"axenov/iptv-checker/app/config"

	"github.com/spf13/cobra"
)

func newCmdWithFlags() *cobra.Command {
	cmd := &cobra.Command{Use: "test"}
	// persistent flags normally set on rootCmd
	cmd.PersistentFlags().BoolVar(&app.Args.Debug, "debug", false, "")
	cmd.PersistentFlags().StringVar(&app.Args.LogLevel, "log-level", "", "")
	addCommonCheckFlags(cmd, 0)
	return cmd
}

func resetArgs() {
	app.Args = app.Arguments{}
}

func resetConfig() {
	app.Config = &config.Config{
		App: config.AppConfig{
			Debug:     false,
			LogLevel:  "info",
			Playlists: "./playlists.ini",
			Tags:      "./channels.json",
		},
		Check: config.CheckConfig{
			Playlists: config.CheckPlaylistsConfig{
				Timeout:     10000,
				AllCooldown: config.IntRange{Min: 0, Max: 0},
				OneCooldown: config.IntRange{Min: 0, Max: 0},
				MaxRoutines: 5,
				PerRoutine:  1,
				UserAgent:   config.UserAgents{"default"},
			},
			Channels: config.CheckChannelsConfig{
				Timeout:     10000,
				ByteRange:   512,
				Cooldown:    config.IntRange{Min: 0, Max: 0},
				MaxRoutines: 50,
				PerRoutine:  10,
				UserAgent:   config.UserAgents{"default"},
			},
		},
		Cache: config.CacheConfig{
			Enabled: false,
			Host:    "localhost",
			Port:    6379,
			Ttl:     1800,
		},
		Server: config.ServerConfig{Port: 8800},
	}
}

func TestApplyAppOverrides_NothingChanged(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{})
	applyAppOverrides(cmd)
	if app.Config.App.Debug {
		t.Error("debug should remain false")
	}
}

func TestApplyAppOverrides_Debug(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--debug"})
	applyAppOverrides(cmd)
	if !app.Config.App.Debug {
		t.Error("expected debug=true")
	}
}

func TestApplyAppOverrides_LogLevel(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--log-level", "error"})
	applyAppOverrides(cmd)
	if app.Config.App.LogLevel != "error" {
		t.Errorf("expected 'error', got '%s'", app.Config.App.LogLevel)
	}
}

func TestApplyAppOverrides_Ini(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"-i", "/custom/path.ini"})
	applyAppOverrides(cmd)
	if app.Config.App.Playlists != "/custom/path.ini" {
		t.Errorf("expected '/custom/path.ini', got '%s'", app.Config.App.Playlists)
	}
}

func TestApplyAppOverrides_Tags(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"-t", "/custom/tags.json"})
	applyAppOverrides(cmd)
	if app.Config.App.Tags != "/custom/tags.json" {
		t.Errorf("expected '/custom/tags.json', got '%s'", app.Config.App.Tags)
	}
}

func TestApplyCacheOverrides_NothingChanged(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{})
	applyCacheOverrides(cmd)
	if app.Config.Cache.Enabled {
		t.Error("cache should remain disabled")
	}
}

func TestApplyCacheOverrides_Enable(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--cache-enabled"})
	applyCacheOverrides(cmd)
	if !app.Config.Cache.Enabled {
		t.Error("expected cache enabled")
	}
}

func TestApplyCacheOverrides_DisableWhenAlreadyEnabled(t *testing.T) {
	resetArgs()
	resetConfig()
	app.Config.Cache.Enabled = true
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--cache-enabled=false"})
	applyCacheOverrides(cmd)
	if app.Config.Cache.Enabled {
		t.Error("expected cache disabled")
	}
}

func TestApplyCacheOverrides_Host(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--cache-host", "db.local"})
	applyCacheOverrides(cmd)
	if app.Config.Cache.Host != "db.local" {
		t.Errorf("expected 'db.local', got '%s'", app.Config.Cache.Host)
	}
}

func TestApplyCacheOverrides_Port(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--cache-port", "6380"})
	applyCacheOverrides(cmd)
	if app.Config.Cache.Port != 6380 {
		t.Errorf("expected 6380, got %d", app.Config.Cache.Port)
	}
}

func TestApplyCacheOverrides_Ttl(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--cache-ttl", "3600"})
	applyCacheOverrides(cmd)
	if app.Config.Cache.Ttl != 3600 {
		t.Errorf("expected 3600, got %d", app.Config.Cache.Ttl)
	}
}

func TestApplyCheckOverrides_NothingChanged(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{})
	applyCheckOverrides(cmd)
	if app.Config.Check.Playlists.Timeout != 10000 {
		t.Errorf("expected 10000, got %d", app.Config.Check.Playlists.Timeout)
	}
}

func TestApplyCheckOverrides_PlaylistsTimeout(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--playlists-timeout", "5"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Playlists.Timeout != 5000 {
		t.Errorf("expected 5000 ms from 5 s, got %d", app.Config.Check.Playlists.Timeout)
	}
}

func TestApplyCheckOverrides_PlaylistsAllCooldown(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--playlists-all-cooldown", "3"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Playlists.AllCooldown.Min != 3000 || app.Config.Check.Playlists.AllCooldown.Max != 3000 {
		t.Errorf("expected [3000,3000] ms from 3 s, got [%d,%d]",
			app.Config.Check.Playlists.AllCooldown.Min, app.Config.Check.Playlists.AllCooldown.Max)
	}
}

func TestApplyCheckOverrides_PlaylistsMaxRoutines(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--playlists-max-routines", "10"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Playlists.MaxRoutines != 10 {
		t.Errorf("expected 10, got %d", app.Config.Check.Playlists.MaxRoutines)
	}
}

func TestApplyCheckOverrides_PlaylistsUserAgent(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--playlists-user-agent", "UA1,UA2"})
	applyCheckOverrides(cmd)
	if len(app.Config.Check.Playlists.UserAgent) != 2 {
		t.Fatalf("expected 2 user-agents, got %d", len(app.Config.Check.Playlists.UserAgent))
	}
	if app.Config.Check.Playlists.UserAgent[0] != "UA1" || app.Config.Check.Playlists.UserAgent[1] != "UA2" {
		t.Errorf("unexpected user-agents: %v", app.Config.Check.Playlists.UserAgent)
	}
}

func TestApplyCheckOverrides_ChannelsTimeout(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--channels-timeout", "8"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Channels.Timeout != 8000 {
		t.Errorf("expected 8000 ms from 8 s, got %d", app.Config.Check.Channels.Timeout)
	}
}

func TestApplyCheckOverrides_ChannelsByteRange(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--channels-byte-range", "1024"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Channels.ByteRange != 1024 {
		t.Errorf("expected 1024, got %d", app.Config.Check.Channels.ByteRange)
	}
}

func TestApplyCheckOverrides_ChannelsCooldown(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--channels-cooldown", "1"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Channels.Cooldown.Min != 1000 || app.Config.Check.Channels.Cooldown.Max != 1000 {
		t.Errorf("expected [1000,1000] ms from 1 s, got [%d,%d]",
			app.Config.Check.Channels.Cooldown.Min, app.Config.Check.Channels.Cooldown.Max)
	}
}

func TestApplyCheckOverrides_ChannelsMaxRoutines(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--channels-max-routines", "100"})
	applyCheckOverrides(cmd)
	if app.Config.Check.Channels.MaxRoutines != 100 {
		t.Errorf("expected 100, got %d", app.Config.Check.Channels.MaxRoutines)
	}
}

func TestApplyCheckOverrides_ChannelsUserAgent(t *testing.T) {
	resetArgs()
	resetConfig()
	cmd := newCmdWithFlags()
	cmd.ParseFlags([]string{"--channels-user-agent", "VLC"})
	applyCheckOverrides(cmd)
	if len(app.Config.Check.Channels.UserAgent) != 1 || app.Config.Check.Channels.UserAgent[0] != "VLC" {
		t.Errorf("expected [VLC], got %v", app.Config.Check.Channels.UserAgent)
	}
}