package event

import "time"

// Type represents the normalized event type
type Type string

const (
	TypePROpened          Type = "pr_opened"
	TypePRClosed          Type = "pr_closed"
	TypePRMerged          Type = "pr_merged"
	TypePRAssigned        Type = "pr_assigned"
	TypePRReviewRequested Type = "pr_review_requested"
	TypePRReviewed        Type = "pr_reviewed"
	TypePRCommented       Type = "pr_commented"
	TypePRSynchronized    Type = "pr_synchronized" // New commits pushed
	TypeIssueOpened       Type = "issue_opened"
	TypeIssueClosed       Type = "issue_closed"
	TypeIssueCommented    Type = "issue_commented"
)

// User represents a user in our normalized event model
type User struct {
	GiteaID       int64  `json:"gitea_id"`
	GiteaUsername string `json:"gitea_username"`
	Email         string `json:"email"`
	FullName      string `json:"full_name"`
}

// Event is a normalized event from Gitea
type Event struct {
	ID        string    `json:"id"`        // Delivery ID from Gitea
	Type      Type      `json:"type"`      // Normalized event type
	Timestamp time.Time `json:"timestamp"` // When the event occurred

	// The user who triggered the event
	Actor User `json:"actor"`

	// Repository info
	RepoName    string `json:"repo_name"`
	RepoFullName string `json:"repo_full_name"`
	RepoURL     string `json:"repo_url"`

	// PR/Issue info
	Number int64  `json:"number"` // PR or Issue number
	Title  string `json:"title"`
	Body   string `json:"body"`
	URL    string `json:"url"`

	// Users to potentially notify (based on roles)
	Owner     *User  `json:"owner,omitempty"`     // PR/Issue author
	Assignees []User `json:"assignees,omitempty"` // Assigned users
	Reviewers []User `json:"reviewers,omitempty"` // Requested reviewers (PR only)

	// For review events
	ReviewState string `json:"review_state,omitempty"` // APPROVED, CHANGES_REQUESTED, COMMENT

	// For comment events
	CommentBody string `json:"comment_body,omitempty"`
	CommentURL  string `json:"comment_url,omitempty"`

	// For synchronize events (new commits pushed)
	Commits []CommitInfo `json:"commits,omitempty"`
}

// CommitInfo represents a commit in a synchronized event
type CommitInfo struct {
	SHA     string `json:"sha"`
	Message string `json:"message"`
	URL     string `json:"url"`
	Author  string `json:"author"`
}

// Notification represents a notification to be sent
type Notification struct {
	// Target user to notify
	TargetUser User `json:"target_user"`

	// The event that triggered this notification
	Event *Event `json:"event"`

	// Why this user is being notified
	Reason NotificationReason `json:"reason"`

	// Message content
	Message string `json:"message"`

	// Channel override (empty = DM)
	Channel string `json:"channel,omitempty"`
}

// NotificationReason explains why a user is being notified
type NotificationReason string

const (
	ReasonOwner    NotificationReason = "owner"     // PR/Issue author
	ReasonAssignee NotificationReason = "assignee"  // Assigned to PR/Issue
	ReasonReviewer NotificationReason = "reviewer"  // Requested reviewer
	ReasonMention  NotificationReason = "mention"   // @mentioned in comment
)