rustytag 1.0.18

use super::version::Version;
use anyhow::Result;
use chrono::Local;
use serde_json::json;

pub struct GitHubClient {
    token: String,
    repo_url: String,
}

impl GitHubClient {
    pub fn new(token: String, repo_url: String) -> Self {
        Self { token, repo_url }
    }

    /// 从环境变量或配置文件获取 GitHub token
    pub fn from_env_or_config() -> Result<String> {
        if let Ok(token) = std::env::var("GITHUB_TOKEN") {
            Ok(token)
        } else {
            let config = crate::utils::config::GlobalConfig::load()?;
            config.github_token.ok_or_else(|| {
                anyhow::anyhow!(
                    "GitHub token not found. To set it up:\n\
                     1. Visit https://github.com/settings/tokens\n\
                     2. Click 'Generate new token' (classic)\n\
                     3. Select the 'repo' scope\n\
                     4. Generate and copy the token\n\
                     5. Set it using:\n\
                        rustytag config --set GITHUB_TOKEN=your_token"
                )
            })
        }
    }

    /// 获取最新的发布版本，通过 GitHub API 获取
    pub async fn get_latest_release() -> Result<String> {
        let repo_url = super::git::get_remote_url()?;

        // 从 repo_url 提取 owner 和 repo
        let parts: Vec<&str> = repo_url.trim_end_matches(".git").split('/').collect();
        if parts.len() < 2 {
            return Ok("initial".to_string());
        }

        let owner = parts[parts.len() - 2];
        let repo = parts[parts.len() - 1];

        // 构建 GitHub API URL，只获取最新的一个发布
        let api_url = format!(
            "https://api.github.com/repos/{}/{}/releases?per_page=1",
            owner, repo
        );

        // 发送请求获取最新的发布
        let client = reqwest::Client::new();
        let response = client
            .get(&api_url)
            .header("User-Agent", "RustyTag")
            .send()
            .await?;

        if !response.status().is_success() {
            return Ok("initial".to_string());
        }

        let releases: Vec<serde_json::Value> = response.json().await?;

        // 如果有发布版本，返回最新的标签名
        if let Some(release) = releases.first() {
            if let Some(tag_name) = release.get("tag_name").and_then(|v| v.as_str()) {
                return Ok(tag_name.to_string());
            }
        }

        Ok("initial".to_string())
    }

    /// 创建 GitHub Release
    pub async fn create_release(&self, version: &Version) -> Result<()> {
        // 获取上一个版本
        let previous_version = Self::get_latest_release().await?;

        // 生成版本对比链接和标题
        let (title, compare_url) = if previous_version == "initial" {
            (
                format!(
                    "### [{}]({}/commits/{}) ({})",
                    version,
                    self.repo_url.trim_end_matches(".git"),
                    version,
                    Local::now().format("%Y-%m-%d")
                ),
                None,
            )
        } else {
            (
                format!(
                    "### [{}]({}/compare/{}...{}) ({})",
                    version,
                    self.repo_url.trim_end_matches(".git"),
                    previous_version,
                    version,
                    Local::now().format("%Y-%m-%d")
                ),
                Some(format!(
                    "{}/compare/{}...{}",
                    self.repo_url.trim_end_matches(".git"),
                    previous_version,
                    version
                )),
            )
        };

        // 获取提交记录
        let commits = if previous_version == "initial" {
            crate::utils::git::get_git_commits()?
        } else {
            crate::utils::git::get_commits_after_tag(&previous_version)?
        };

        // 生成 release notes
        let mut release_notes = title;
        release_notes.push_str("\n\n### Commits\n\n");

        for commit in commits {
            if commit.message.starts_with("chore: release") {
                continue;
            }

            // 获取提交者信息
            let author = if let Some(author) = commit
                .message
                .lines()
                .next()
                .and_then(|line| line.rfind(" by @"))
                .map(|pos| &commit.message[pos..])
            {
                author.to_string()
            } else {
                String::new()
            };

            release_notes.push_str(&format!(
                "* {}{} ([{}]({}/commit/{}))\n",
                commit
                    .message
                    .lines()
                    .next()
                    .unwrap_or("")
                    .trim()
                    .split(" by @")
                    .next()
                    .unwrap_or("")
                    .trim(), // 移除原有的作者信息
                author, // 添加作者信息
                &commit.hash[..7],
                self.repo_url.trim_end_matches(".git"),
                commit.hash
            ));
        }

        // 如果有对比链接，添加到 release notes
        if let Some(url) = compare_url {
            release_notes.push_str("\n---\n");
            release_notes.push_str(&format!("Full Changelog: {}", url));
        }

        // 从 repo_url 提取 owner 和 repo
        let parts: Vec<&str> = self.repo_url.trim_end_matches(".git").split('/').collect();
        let owner = parts[parts.len() - 2];
        let repo = parts[parts.len() - 1];

        let client = reqwest::Client::new();
        let url = format!("https://api.github.com/repos/{}/{}/releases", owner, repo);

        let response = client
            .post(url)
            .header("Accept", "application/vnd.github.v3+json")
            .header("Authorization", format!("token {}", self.token))
            .header("User-Agent", "RustyTag")
            .json(&json!({
                "tag_name": version.to_string(),
                "name": format!("Release {}", version),
                "body": release_notes,
                "draft": false,
                "prerelease": false
            }))
            .send()
            .await?;

        if response.status().is_success() {
            println!("✨ Successfully created GitHub release for {}", version);
            Ok(())
        } else {
            Err(anyhow::anyhow!(
                "Failed to create release: {}",
                response.text().await?
            ))
        }
    }

    /// 获取所有发布版本
    pub async fn list_releases(&self) -> Result<()> {
        let parts: Vec<&str> = self.repo_url.trim_end_matches(".git").split('/').collect();
        let owner = parts[parts.len() - 2];
        let repo = parts[parts.len() - 1];

        let client = reqwest::Client::new();
        let url = format!("https://api.github.com/repos/{}/{}/releases", owner, repo);

        let response = client
            .get(&url)
            .header("Accept", "application/vnd.github.v3+json")
            .header("Authorization", format!("token {}", self.token))
            .header("User-Agent", "RustyTag")
            .send()
            .await?;

        if !response.status().is_success() {
            return Err(anyhow::anyhow!(
                "Failed to fetch releases: {}",
                response.text().await?
            ));
        }

        let releases: Vec<serde_json::Value> = response.json().await?;

        if releases.is_empty() {
            println!("No releases found.");
            return Ok(());
        }

        println!("\n📋 Release List");
        println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");

        for release in releases {
            let tag_name = release["tag_name"].as_str().unwrap_or("Unknown version");
            let created_at = release["created_at"]
                .as_str()
                .unwrap_or("")
                .split('T')
                .next()
                .unwrap_or("");
            let html_url = release["html_url"].as_str().unwrap_or("");

            println!("🏷️  {} ({}) -> {}", tag_name, created_at, html_url);
        }

        println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n");
        Ok(())
    }
}

/// 创建 GitHub Release 的便捷函数
pub async fn create_github_release(version: &Version) -> Result<()> {
    let token = GitHubClient::from_env_or_config()?;
    let repo_url = crate::utils::git::get_remote_url()?;

    let client = GitHubClient::new(token, repo_url);
    client.create_release(version).await
}

/// 列出所有 GitHub Release 的便捷函数
pub async fn list_github_releases() -> Result<()> {
    let token = GitHubClient::from_env_or_config()?;
    let repo_url = crate::utils::git::get_remote_url()?;

    let client = GitHubClient::new(token, repo_url);
    client.list_releases().await
}