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use std::{io::Write, sync::Arc};

use crate::{api_traits::RemoteProject, cli::my::MyOptions, config::Config, remote, Result};

use super::{
    common::{self, get_user},
    gist, merge_request,
    project::{ProjectListBodyArgs, ProjectListCliArgs},
};

pub fn execute(
    options: MyOptions,
    config: Arc<Config>,
    domain: String,
    path: String,
) -> Result<()> {
    match options {
        MyOptions::MergeRequest(cli_args) => {
            merge_request::list_merge_requests(domain, path, config, cli_args)
        }
        MyOptions::Project(cli_args) => {
            let user = get_user(&domain, &path, &config, &cli_args.list_args)?;
            let remote = remote::get_project(
                domain,
                path,
                config,
                Some(&cli_args.list_args.get_args.cache_args),
            )?;
            let from_to_args = remote::validate_from_to_page(&cli_args.list_args)?;
            let body_args = ProjectListBodyArgs::builder()
                .from_to_page(from_to_args)
                .user(Some(user))
                .stars(cli_args.stars)
                .build()?;
            if cli_args.list_args.num_pages {
                return common::num_project_pages(remote, body_args, std::io::stdout());
            }
            if cli_args.list_args.num_resources {
                return common::num_project_resources(remote, body_args, std::io::stdout());
            }
            list_user_projects(remote, body_args, cli_args, std::io::stdout())
        }
        MyOptions::Gist(cli_args) => {
            let remote = remote::get_gist(
                domain,
                path,
                config,
                Some(&cli_args.list_args.get_args.cache_args),
            )?;
            if cli_args.list_args.num_pages {
                return common::num_user_gists(remote, std::io::stdout());
            }
            if cli_args.list_args.num_resources {
                return common::num_user_gist_resources(remote, std::io::stdout());
            }
            let from_to_args = remote::validate_from_to_page(&cli_args.list_args)?;
            let body_args = gist::GistListBodyArgs::builder()
                .body_args(from_to_args)
                .build()?;
            gist::list_user_gists(remote, body_args, cli_args, std::io::stdout())
        }
    }
}

fn list_user_projects<W: Write>(
    remote: Arc<dyn RemoteProject>,
    body_args: ProjectListBodyArgs,
    cli_args: ProjectListCliArgs,
    writer: W,
) -> Result<()> {
    common::list_user_projects(remote, body_args, cli_args, writer)
}

#[cfg(test)]
mod tests {
    use remote::Member;

    use crate::cmds::project::ProjectListCliArgs;

    use self::remote::{ListRemoteCliArgs, Project};

    use super::*;

    struct MockGitlab {
        projects: Vec<Project>,
    }

    impl MockGitlab {
        fn new(projects: Vec<Project>) -> Self {
            MockGitlab { projects }
        }
    }

    impl RemoteProject for MockGitlab {
        fn list(&self, _args: ProjectListBodyArgs) -> Result<Vec<Project>> {
            Ok(self.projects.clone())
        }

        fn get_project_data(
            &self,
            _id: Option<i64>,
            _path: Option<&str>,
        ) -> Result<crate::io::CmdInfo> {
            todo!()
        }

        fn get_project_members(&self) -> Result<crate::io::CmdInfo> {
            todo!()
        }

        fn get_url(&self, _option: crate::cli::browse::BrowseOptions) -> String {
            todo!()
        }

        fn num_pages(&self, _args: ProjectListBodyArgs) -> Result<Option<u32>> {
            todo!()
        }

        fn num_resources(
            &self,
            _args: ProjectListBodyArgs,
        ) -> Result<Option<crate::api_traits::NumberDeltaErr>> {
            todo!()
        }
    }

    #[test]
    fn test_list_current_user_projects() {
        let projects = vec![Project::new(1, "main"), Project::new(2, "dev")];
        let user_id = 1;
        let cli_args = ProjectListCliArgs::builder()
            .list_args(ListRemoteCliArgs::builder().build().unwrap())
            .build()
            .unwrap();
        let body_args = ProjectListBodyArgs::builder()
            .from_to_page(None)
            .user(Some(
                Member::builder()
                    .id(user_id)
                    .name("jordi".to_string())
                    .username("jordilin".to_string())
                    .build()
                    .unwrap(),
            ))
            .build()
            .unwrap();
        let mut buffer = Vec::new();
        assert!(list_user_projects(
            Arc::new(MockGitlab::new(projects)),
            body_args,
            cli_args,
            &mut buffer,
        )
        .is_ok());
        assert_eq!(
            "ID|Default Branch|URL|Created at\n1|main||\n2|dev||\n",
            String::from_utf8(buffer).unwrap()
        );
    }
}