package config

import (
	"fmt"
	"os"

	"gopkg.in/yaml.v3"
)

type Config struct {
	Server   ServerConfig   `yaml:"server"`
	Database DatabaseConfig `yaml:"database"`
	Social   SocialConfig   `yaml:"social"`
	Google   GoogleConfig   `yaml:"google"`
	LiteLLM  LiteLLMConfig  `yaml:"litellm"`
}

type ServerConfig struct {
	ListeningPort int       `yaml:"listening_port"`
	TLS           TLSConfig `yaml:"tls"`
	CorsOrigins   []string  `yaml:"cors_origins"`
}

type TLSConfig struct {
	Enabled  bool   `yaml:"enabled"`
	CertFile string `yaml:"cert_file"`
	KeyFile  string `yaml:"key_file"`
}

type DatabaseConfig struct {
	Path            string `yaml:"path"`
	MaxOpenConns    int    `yaml:"max_open_conns"`
	MaxIdleConns    int    `yaml:"max_idle_conns"`
	ConnMaxLifetime int    `yaml:"conn_max_lifetime"`
}

type JWTConfig struct {
	JwtSecret string `yaml:"jwt_secret"`
}

type SocialConfig struct {
	Instagram InstagramConfig `yaml:"instagram"`
	TikTok    TikTokConfig    `yaml:"tiktok"`
	YouTube   YouTubeConfig   `yaml:"youtube"`
}

type InstagramConfig struct {
	APIKey  string `yaml:"api_key"`
	BaseURL string `yaml:"base_url"`
}

type TikTokConfig struct {
	APIKey  string `yaml:"api_key"`
	BaseURL string `yaml:"base_url"`
}

type YouTubeConfig struct {
	APIKey  string `yaml:"api_key"`
	BaseURL string `yaml:"base_url"`
}

type GoogleConfig struct {
	TrendsAPIKey string `yaml:"trends_api_key"`
	BaseURL      string `yaml:"base_url"`
}

type LiteLLMConfig struct {
	ProxyURL    string            `yaml:"proxy_url"`
	APIKey      string            `yaml:"api_key"`
	Model       string            `yaml:"model"`
	Headers     map[string]string `yaml:"headers"`
	MaxRetries  int               `yaml:"max_retries"`
	TimeoutSecs int               `yaml:"timeout_secs"`
}

func Load(path string) (*Config, error) {
	data, err := os.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("read config file: %w", err)
	}

	var config Config
	if err := yaml.Unmarshal(data, &config); err != nil {
		return nil, fmt.Errorf("parse config file: %w", err)
	}

	return &config, nil
}