package config

import (
	"testing"

	"github.com/spf13/viper"
)

func TestGetModel(t *testing.T) {
	// Reset viper for testing
	viper.Reset()
	viper.SetDefault("default_model", "grok-4")

	tests := []struct {
		name      string
		flagModel string
		expected  string
	}{
		{
			name:      "returns flag model when provided",
			flagModel: "grok-beta",
			expected:  "grok-beta",
		},
		{
			name:      "returns default when flag empty",
			flagModel: "",
			expected:  "grok-4",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			result := GetModel("", tt.flagModel)
			if result != tt.expected {
				t.Errorf("GetModel(%q) = %q, want %q", tt.flagModel, result, tt.expected)
			}
		})
	}
}

func TestGetModelWithAlias(t *testing.T) {
	viper.Reset()
	viper.Set("aliases.beta", "grok-beta-2")
	viper.SetDefault("default_model", "grok-4")

	result := GetModel("", "beta")
	expected := "grok-beta-2"
	if result != expected {
		t.Errorf("GetModel('beta') = %q, want %q", result, expected)

	}
}

func TestGetCommandModel(t *testing.T) {
	viper.Reset()
	viper.SetDefault("default_model", "grok-4")
	viper.Set("commands.lint.model", "grok-4-1-fast-non-reasoning")
	viper.Set("commands.other.model", "grok-other")

	tests := []struct {
		command   string
		flagModel string
		expected  string
	}{
		{
			command:   "lint",
			flagModel: "",
			expected:  "grok-4-1-fast-non-reasoning",
		},
		{
			command:   "lint",
			flagModel: "override",
			expected:  "override",
		},
		{
			command:   "other",
			flagModel: "",
			expected:  "grok-other",
		},
		{
			command:   "unknown",
			flagModel: "",
			expected:  "grok-4",
		},
	}

	for _, tt := range tests {
		t.Run(tt.command+"_"+tt.flagModel, func(t *testing.T) {
			result := GetModel(tt.command, tt.flagModel)
			if result != tt.expected {
				t.Errorf("GetModel(%q, %q) = %q, want %q", tt.command, tt.flagModel, result, tt.expected)
			}
		})
	}
}

func TestLoad(t *testing.T) {
	// Just ensure Load doesn't panic
	Load()
}

func TestGetTemperature(t *testing.T) {
	viper.Reset()
	viper.SetDefault("temperature", 0.7)
	got := GetTemperature()
	if got != 0.7 {
		t.Errorf("GetTemperature() default = %v, want 0.7", got)
	}

	viper.Set("temperature", 0.8)
	got = GetTemperature()
	if got != 0.8 {
		t.Errorf("GetTemperature() custom = %v, want 0.8", got)
	}
}

func TestGetTimeout(t *testing.T) {
	viper.Reset()
	viper.SetDefault("timeout", 60)

	got := GetTimeout()
	if got != 60 {
		t.Errorf("GetTimeout() default = %d, want 60", got)
	}

	viper.Set("timeout", 30)
	got = GetTimeout()
	if got != 30 {
		t.Errorf("GetTimeout() = %d, want 30", got)
	}

	viper.Set("timeout", 0)
	got = GetTimeout()
	if got != 60 {
		t.Errorf("GetTimeout() invalid = %d, want 60", got)
	}
}

func TestGetLogLevel(t *testing.T) {
	viper.Reset()
	viper.SetDefault("log_level", "info")

	got := GetLogLevel()
	if got != "info" {
		t.Errorf("GetLogLevel() default = %q, want info", got)
	}

	viper.Set("log_level", "debug")
	got = GetLogLevel()
	if got != "debug" {
		t.Errorf("GetLogLevel() custom = %q, want debug", got)
	}
}