package llm

import (
	"net/http"
	"strings"
	"time"

	"gitea.maximumdirect.net/eric/audita/internal/core/config"
)

// EffectiveConfig is the runtime LLM configuration consumed by adapters and
// schedulers after primary/validation inheritance is resolved.
type EffectiveConfig struct {
	APIKey         string
	Model          string
	BaseURL        string
	RequestTimeout time.Duration
	MaxRetries     int
	Concurrency    int
}

// ResolvePrimaryConfig resolves the primary LLM settings into runtime form.
func ResolvePrimaryConfig(cfg config.Config) EffectiveConfig {
	return resolveFromLLMConfig(cfg.PrimaryLLM, cfg.TotalLLMConcurrency)
}

// ResolveValidationConfig resolves validation LLM settings with inheritance
// from primary values when validation overrides are unset.
func ResolveValidationConfig(cfg config.Config) EffectiveConfig {
	return resolveFromLLMConfig(cfg.EffectiveValidationLLMConfig(), cfg.EffectiveValidationLLMConcurrency())
}

// ToOpenAICompatibleClientConfig converts an effective runtime config into
// direct HTTP adapter config.
func (c EffectiveConfig) ToOpenAICompatibleClientConfig(httpClient *http.Client) OpenAICompatibleClientConfig {
	return OpenAICompatibleClientConfig{
		BaseURL:        c.BaseURL,
		Model:          c.Model,
		APIKey:         c.APIKey,
		MaxRetries:     c.MaxRetries,
		HTTPClient:     httpClient,
		RequestTimeout: c.RequestTimeout,
	}
}

func resolveFromLLMConfig(raw config.LLMConfig, concurrency int) EffectiveConfig {
	return EffectiveConfig{
		APIKey:         strings.TrimSpace(raw.APIKey),
		Model:          strings.TrimSpace(raw.Model),
		BaseURL:        strings.TrimSpace(raw.BaseURL),
		RequestTimeout: time.Duration(raw.TimeoutSeconds) * time.Second,
		MaxRetries:     raw.MaxRetries,
		Concurrency:    concurrency,
	}
}