use std::{

fs,

path::{Path, PathBuf},

};

use anyhow::{Context, Result, bail};

use crate::cli::InitOpts;

const TEMPLATE: &str = r#"version = 1

[[tasks]]

name = "setup"

command = ""

description = "Project setup (fill me)"

shortcuts = ["s"]

[[tasks]]

name = "dev"

command = ""

description = "Start dev server (fill me)"

dependencies = ["setup"]

shortcuts = ["d"]

[skills]

sync_tasks = true

install = ["quality-bun-feature-delivery"]

[skills.codex]

generate_openai_yaml = true

force_reload_after_sync = true

task_skill_allow_implicit_invocation = false

[commit.skill_gate]

mode = "block"

required = ["quality-bun-feature-delivery"]

[commit.skill_gate.min_version]

quality-bun-feature-delivery = 2

# Bun-focused optional test gate:

#

#[commit.testing]

#mode = "block"

#runner = "bun"

#bun_repo_strict = true

#require_related_tests = true

#ai_scratch_test_dir = ".ai/test"

#run_ai_scratch_tests = true

#allow_ai_scratch_to_satisfy_gate = false

#max_local_gate_seconds = 20

"#;

pub(crate) fn write_template(path: &Path) -> Result<()> {

if let Some(parent) = path.parent() {

if !parent.as_os_str().is_empty() {

fs::create_dir_all(parent)

.with_context(|| format!("failed to create directory {}", parent.display()))?;

}

}

fs::write(path, TEMPLATE).with_context(|| format!("failed to write {}", path.display()))?;

Ok(())

}

pub fn run(opts: InitOpts) -> Result<()> {

let target = resolve_path(opts.path);

if target.exists() {

bail!("{} already exists; refusing to overwrite", target.display());

}

write_template(&target)?;

println!("created {}", target.display());

Ok(())

}

fn resolve_path(path: Option<PathBuf>) -> PathBuf {

match path {

Some(p) if p.is_absolute() => p,

Some(p) => std::env::current_dir()

.unwrap_or_else(|_| PathBuf::from("."))

.join(p),

None => std::env::current_dir()

.unwrap_or_else(|_| PathBuf::from("."))

.join("flow.toml"),

}

}

#[cfg(test)]

mod tests {

use super::*;

#[test]

fn template_includes_codex_skill_baseline() {

assert!(TEMPLATE.contains("[skills]"));

assert!(TEMPLATE.contains("install = [\"quality-bun-feature-delivery\"]"));

assert!(TEMPLATE.contains("[skills.codex]"));

assert!(TEMPLATE.contains("[commit.skill_gate]"));

assert!(TEMPLATE.contains("quality-bun-feature-delivery = 2"));

}

}