use serde::{Deserialize, Serialize};
use uuid::Uuid;

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct RefUpdate {
    pub name: String,
    pub old_oid: String,
    pub new_oid: String,
}

impl RefUpdate {
    #[must_use]
    pub fn is_delete(&self) -> bool {
        self.new_oid.is_empty() || self.new_oid.chars().all(|c| c == '0')
    }

    #[must_use]
    pub fn ref_kind(&self) -> Option<&'static str> {
        if self.name.starts_with("refs/tags/") {
            Some("tag")
        } else if self.name.starts_with("refs/heads/") {
            Some("branch")
        } else {
            None
        }
    }

    #[must_use]
    pub fn short_name(&self) -> &str {
        self.name
            .strip_prefix("refs/heads/")
            .or_else(|| self.name.strip_prefix("refs/tags/"))
            .unwrap_or(self.name.as_str())
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum PullRequestAction {
    Opened,
    Synchronize,
    Reopened,
    Merged,
    Closed,
}

impl PullRequestAction {
    #[must_use]
    pub const fn as_str(self) -> &'static str {
        match self {
            Self::Opened => "opened",
            Self::Synchronize => "synchronize",
            Self::Reopened => "reopened",
            Self::Merged => "merged",
            Self::Closed => "closed",
        }
    }
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(tag = "kind", rename_all = "snake_case")]
pub enum CiEvent {
    Push(PushEvent),
    PullRequest(PullRequestEvent),
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct PushEvent {
    pub id: Uuid,
    pub repo_id: Uuid,
    pub space_id: Uuid,
    pub actor_id: Option<Uuid>,
    pub refs: Vec<RefUpdate>,
}

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct PullRequestEvent {
    pub id: Uuid,
    pub repo_id: Uuid,
    pub space_id: Uuid,
    pub actor_id: Option<Uuid>,
    pub number: i64,
    pub action: PullRequestAction,
    pub head_sha: String,
    pub head_ref: String,
    pub base_sha: String,
    pub base_ref: String,
}