package gitea

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"time"
)

type PullRequest struct {
	Merged    bool
	Merged_at time.Time
}

type Issue struct {
	Id                 uint
	Url                string
	Html_url           string
	Number             uint
	User               User
	Original_author    string
	Original_author_id uint
	Title              string
	Body               string
	Ref                string
	Assets             []string
	Labels             []string
	Milestone          Milestone
	Assignee           User
	Assignees          []User
	State              string
	Is_locked          bool
	Comments           uint
	Created_at         time.Time
	Updated_at         time.Time
	Closed_at          time.Time
	Due_date           time.Time
	Pull_request       PullRequest
	Repository         Repository
	Pin_order          uint
}

func (gitea *Gitea) GetIssues(repo Repository) ([]Issue, error) {
	url := fmt.Sprintf("%s/repos/%s/issues?state=all", gitea.Url(), repo.Full_name)
	response, err := http.Get(url)
	if err != nil {
		return nil, err
	}
	defer response.Body.Close()
	var data []Issue
	decoder := json.NewDecoder(response.Body)
	// NOTE: remove this if I do not want to store everything from the json result in the struct
	decoder.DisallowUnknownFields() // remain if every field shall be extracted
	if err = decoder.Decode(&data); err != nil {
		return nil, err
	}
	return data, nil
}

func (gitea *Gitea) GetIssue(repo Repository, id uint) (Issue, error) {
	var issue Issue
	url := fmt.Sprintf("%s/repos/%s/issues/%d", gitea.Url(), repo.Full_name, id)
	response, err := http.Get(url)
	if err != nil {
		return issue, err
	}
	defer response.Body.Close()
	decoder := json.NewDecoder(response.Body)
	// NOTE: remove this if I do not want to store everything from the json result in the struct
	decoder.DisallowUnknownFields() // remain if every field shall be extracted
	if err = decoder.Decode(&issue); err != nil {
		return issue, err
	}
	return issue, nil
}

func (gitea *Gitea) UpdateIssue(repo Repository, issue Issue) error {
	url := fmt.Sprintf("%s/repos/%s/issues/%d", gitea.Url(), repo.Full_name, issue.Id)
	var payload map[string]interface{}
	payload["assignee"] = issue.Assignee
	payload["assignees"] = issue.Assignees
	payload["body"] = issue.Body
	payload["due_date"] = issue.Due_date
	payload["milestone"] = issue.Milestone
	payload["ref"] = issue.Ref
	payload["state"] = issue.State
	payload["title"] = issue.Title
	payload["unset_due_date"] = issue.Due_date.Unix() == 0
	json, err := json.Marshal(&payload)
	if err != nil {
		return err
	}
	_, err = http.NewRequest(http.MethodPatch, url, bytes.NewBuffer(json))
	if err != nil {
		return err
	}
	return nil
}