package platforms

import (
	"code-review/services/types"
	"code-review/utils"
	"fmt"
)

// GiteeEvent Gitee 平台的 webhook 事件
type GiteeEvent struct {
	apiBase    string
	auth       *AuthConfig
	Event      string
	client     *httpClient
	Action     string `json:"action"`
	ActionDesc string `json:"action_desc"`
	Hook       struct {
		Password string `json:"password"` // webhook 密码
	} `json:"hook"`
	Password string `json:"password"` // 兼容旧版本
	Project  struct {
		ID          int    `json:"id"`
		Name        string `json:"name"`
		Path        string `json:"path"`
		FullName    string `json:"full_name"`
		WebURL      string `json:"web_url"`
		Description string `json:"description"`
	} `json:"project"`
	PullRequest struct {
		ID           int    `json:"id"`
		Number       int    `json:"number"`
		State        string `json:"state"`
		Title        string `json:"title"`
		Body         string `json:"body"`
		SourceBranch string `json:"source_branch"`
		TargetBranch string `json:"target_branch"`
		Commits      []struct {
			ID      string `json:"id"`
			Message string `json:"message"`
		} `json:"commits"`
		Changes []struct {
			Path    string `json:"path"`
			Content string `json:"content"`
			Type    string `json:"type"` // added, modified, deleted, renamed
			OldPath string `json:"old_path,omitempty"`
		} `json:"changes"`
	} `json:"pull_request"`
}

func NewGiteeEvent(baseURL string, auth *AuthConfig) *GiteeEvent {
	return &GiteeEvent{
		apiBase: baseURL,
		auth:    auth,
		client:  newHTTPClient(baseURL, auth),
	}
}

func (e *GiteeEvent) ExtractChanges() (*types.CodeChanges, error) {
	changes := &types.CodeChanges{
		Repository: e.Project.FullName,
		Branch:     e.PullRequest.SourceBranch,
		CommitID:   e.PullRequest.Commits[len(e.PullRequest.Commits)-1].ID,
		Files:      make([]types.FileChange, 0, len(e.PullRequest.Changes)),
		PullRequest: &types.PullRequest{
			ID:           e.PullRequest.ID,
			Title:        e.PullRequest.Title,
			Description:  e.PullRequest.Body,
			SourceBranch: e.PullRequest.SourceBranch,
			TargetBranch: e.PullRequest.TargetBranch,
		},
	}

	for _, change := range e.PullRequest.Changes {
		fileChange := types.FileChange{
			Path:    change.Path,
			Content: change.Content,
			OldPath: change.OldPath,
		}

		fileChange.Type = utils.ParseFileType(change.Type)

		changes.Files = append(changes.Files, fileChange)
	}

	return changes, nil
}

func (e *GiteeEvent) PostComments(result *types.ReviewResult) error {
	if e.client == nil {
		e.client = newHTTPClient(e.apiBase, e.auth)
	}

	for _, comment := range result.Comments {
		body := map[string]interface{}{
			"access_token": e.auth.Token,
			"body": fmt.Sprintf("**Code Review Comment**\n\nFile: %s\nLine: %d\nSeverity: %s\n\n%s",
				comment.Path,
				comment.Line,
				comment.Severity,
				comment.Content,
			),
			"position_line": comment.Line,
			"path":          comment.Path,
		}

		path := fmt.Sprintf("/v5/repos/%s/pulls/%d/comments",
			e.Project.FullName,
			e.PullRequest.Number,
		)

		if err := e.client.post(path, body); err != nil {
			return fmt.Errorf("post comment failed: %w", err)
		}
	}

	// 发送总结评论
	if result.Summary != "" {
		body := map[string]interface{}{
			"access_token": e.auth.Token,
			"body":         fmt.Sprintf("**Code Review Summary**\n\n%s", result.Summary),
		}

		path := fmt.Sprintf("/v5/repos/%s/pulls/%d/comments",
			e.Project.FullName,
			e.PullRequest.Number,
		)

		if err := e.client.post(path, body); err != nil {
			return fmt.Errorf("post summary failed: %w", err)
		}
	}

	return nil
}

func (e *GiteeEvent) GetPlatform() string {
	return "gitee"
}