package ollama

import (
	"encoding/json"
	"errors"
	"fmt"
	"net/http"
)

type ListModelsResponse struct {
	Models []struct {
		Name        string `json:"name"`
		Model       string `json:"model"`
		RemoteModel string `json:"remote_model"`
		RemoteHost  string `json:"remote_host"`
		ModifiedAt  string `json:"modified_at"`
		Size        int    `json:"size"`
		Digest      string `json:"digest"`
		Details     struct {
			Format            string   `json:"format"`
			Family            string   `json:"family"`
			Families          []string `json:"families"`
			ParameterSize     string   `json:"parameter_size"`
			QuantizationLevel string   `json:"quantization_level"`
		} `json:"details"`
	} `json:"models"`
}

func (o Ollama) ListModels() (ListModelsResponse, int, error) {
	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s/tags", o.baseUrl), nil)
	if err != nil {
		return ListModelsResponse{}, -1, err
	}

	for key, val := range o.customHeaders {
		req.Header.Set(key, val)
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return ListModelsResponse{}, -1, err
	}
	defer resp.Body.Close()

	if resp.StatusCode != 200 {
		return ListModelsResponse{}, resp.StatusCode, errors.New("status code is not 200")
	}

	var respBody ListModelsResponse
	if err := json.NewDecoder(resp.Body).Decode(&respBody); err != nil {
		return ListModelsResponse{}, -1, err
	}
	return respBody, resp.StatusCode, nil
}