package endpoints

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

	"git.dragse.it/anthrove/e621-sdk-go/pkg/e621/model"
	"git.dragse.it/anthrove/e621-sdk-go/pkg/e621/utils"
)

// GetDmail retrieves a specific DMail by its ID.
//
// This function performs an HTTP GET request to the e621 DMail endpoint and parses
// the JSON content to extract the DMail data.
//
// Parameters:
//   - requestContext: The model.RequestContext for the API request.
//   - ID: The ID of the DMail to be fetched.
//
// Returns:
//   - model.DMail: A struct containing the DMail data.
//   - error: An error, if any, encountered during the API request or response handling.
func GetDmail(requestContext model.RequestContext, ID int) (model.DMail, error) {
	// Create a new HTTP GET request to fetch the post information.
	r, err := http.NewRequest("GET", fmt.Sprintf("%s/dmails/%d.json", requestContext.Host, ID), nil)
	if err != nil {
		// Log the error and return an empty Post struct and the error.

		return model.DMail{}, err
	}

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided http.Client.
	resp, err := requestContext.Client.Do(r)
	if err != nil {
		// Log the error and return an empty Post struct and the error.

		return model.DMail{}, err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return model.DMail{}, utils.StatusCodesToError(resp.StatusCode)
	}

	// Initialize a Post struct to store the response data.
	var postResponse model.DMail

	// Decode the JSON response into the PostResponse struct.
	err = json.NewDecoder(resp.Body).Decode(&postResponse)
	if err != nil {
		// Log the error and return an empty Post struct and the error.

		return model.DMail{}, err
	}

	// Return the post information and no error (nil).
	return postResponse, nil
}

// DeleteDmail deletes a specific DMail by its ID.
//
// This function performs an HTTP DELETE request to the e621 DMail endpoint.
//
// Parameters:
//   - requestContext: The model.RequestContext for the API request.
//   - ID: The ID of the DMail to be deleted.
//
// Returns:
//   - error: An error, if any, encountered during the API request or response handling.
func DeleteDmail(requestContext model.RequestContext, ID int) error {
	// Create a new HTTP GET request to fetch the post information.
	r, err := http.NewRequest("DELETE", fmt.Sprintf("%s/dmails/%d.json", requestContext.Host, ID), nil)
	if err != nil {
		// Log the error and return an empty Post struct and the error.
		return err
	}

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided http.Client.
	resp, err := requestContext.Client.Do(r)
	if err != nil {
		// Log the error and return an empty Post struct and the error.

		return err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return utils.StatusCodesToError(resp.StatusCode)
	}

	// Return the post information and no error (nil).
	return nil
}

// MarkAsReadDmail marks a specific DMail as read by its ID.
//
// This function performs an HTTP PUT request to the e621 DMail endpoint.
//
// Parameters:
//   - requestContext: The model.RequestContext for the API request.
//   - ID: The ID of the DMail to be marked as read.
//
// Returns:
//   - error: An error, if any, encountered during the API request or response handling.
func MarkAsReadDmail(requestContext model.RequestContext, ID int) error {
	// Create a new HTTP GET request to fetch the post information.
	r, err := http.NewRequest("PUT", fmt.Sprintf("%s/dmails/%d/mark_as_read.json", requestContext.Host, ID), nil)
	if err != nil {
		// Log the error and return an empty Post struct and the error.
		return err
	}

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided http.Client.
	resp, err := requestContext.Client.Do(r)
	if err != nil {
		// Log the error and return an empty Post struct and the error.
		return err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return utils.StatusCodesToError(resp.StatusCode)
	}

	// Return the post information and no error (nil).
	return nil
}

// GetAllDmails retrieves all DMails.
//
// This function performs an HTTP GET request to the e621 DMail endpoint and parses
// the JSON content to extract the DMail data.
//
// Parameters:
//   - requestContext: The model.RequestContext for the API request.
//   - query: A map containing the query parameters for the request.
//
// Returns:
//   - []model.DMail: A slice of structs containing the DMail data.
//   - error: An error, if any, encountered during the API request or response handling.
func GetAllDmails(requestContext model.RequestContext, query map[string]string) ([]model.DMail, error) {
	// Create a new HTTP GET request.
	r, err := http.NewRequest("GET", fmt.Sprintf("%s/dmails.json", requestContext.Host), nil)
	if err != nil {
		return nil, err
	}

	// Append query parameters to the request URL.
	q := r.URL.Query()
	for k, v := range query {
		q.Add(k, v)
	}
	r.URL.RawQuery = q.Encode()

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided http.Client.
	resp, err := requestContext.Client.Do(r)
	if err != nil {
		return nil, err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return nil, utils.StatusCodesToError(resp.StatusCode)
	}

	// Initialize a slice of Post struct to store the response data.
	var postResponse []model.DMail

	// Decode the JSON response into the PostResponse struct.
	err = json.NewDecoder(resp.Body).Decode(&postResponse)
	if err != nil {
		// Log the error and return an empty slice and the error.

		return []model.DMail{}, nil
	}

	// Return the list of posts and no error (nil).
	return postResponse, nil
}

// MarkAsReadAllDmails marks all DMails as read.
//
// This function performs an HTTP PUT request to the e621 DMail endpoint.
//
// Parameters:
//   - requestContext: The model.RequestContext for the API request.
//
// Returns:
//   - error: An error, if any, encountered during the API request or response handling.
func MarkAsReadAllDmails(requestContext model.RequestContext) error {
	// Create a new HTTP GET request to fetch the post information.
	r, err := http.NewRequest("PUT", fmt.Sprintf("%s/dmails/mark_all_as_read.json", requestContext.Host), nil)

	r.Header.Set("User-Agent", requestContext.UserAgent)
	r.Header.Add("Accept", "application/json")
	r.SetBasicAuth(requestContext.Username, requestContext.APIKey)

	// Send the request using the provided http.Client.
	resp, err := requestContext.Client.Do(r)
	if err != nil {
		// Log the error and return an empty Post struct and the error.
		return err
	}

	// Check if the HTTP response status code indicates success (2xx range).
	if resp.StatusCode < 200 || resp.StatusCode > 300 {
		// If the status code is outside the 2xx range, return an error based on the status code.
		return utils.StatusCodesToError(resp.StatusCode)
	}

	// Return the post information and no error (nil).
	return nil
}