//! Spike item MCP tools.

#![allow(unused_imports, dead_code)]
#[allow(unused_imports)]
use crate::agents::{
    close_bug_to_archive, feature_branch_has_unmerged_changes, move_story_to_done,
};
use crate::http::context::AppContext;
use crate::http::workflow::{
    add_criterion_to_file, check_criterion_in_file, create_bug_file, create_refactor_file,
    create_spike_file, create_story_file, edit_criterion_in_file, list_bug_files,
    list_refactor_files, load_pipeline_state, load_upcoming_stories, remove_criterion_from_file,
    update_story_in_file, validate_story_dirs,
};
use crate::io::story_metadata::{
    check_archived_deps, check_archived_deps_from_list, parse_front_matter, parse_unchecked_todos,
};
use crate::service::story::parse_test_cases;
use crate::slog_warn;
#[allow(unused_imports)]
use crate::workflow::{TestCaseResult, TestStatus, evaluate_acceptance_with_coverage};
use serde_json::{Value, json};
use std::collections::HashMap;
use std::fs;

pub(crate) fn tool_create_spike(args: &Value, ctx: &AppContext) -> Result<String, String> {
    let name = args
        .get("name")
        .and_then(|v| v.as_str())
        .ok_or("Missing required argument: name")?;
    let description = args.get("description").and_then(|v| v.as_str());
    let acceptance_criteria: Vec<String> = args
        .get("acceptance_criteria")
        .and_then(|v| serde_json::from_value(v.clone()).ok())
        .ok_or("Missing required argument: acceptance_criteria")?;
    if acceptance_criteria.is_empty() {
        return Err("acceptance_criteria must contain at least one entry".to_string());
    }
    const JUNK_AC: &[&str] = &["", "todo", "tbd", "fixme", "xxx", "???"];
    let all_junk = acceptance_criteria
        .iter()
        .all(|ac| JUNK_AC.contains(&ac.trim().to_lowercase().as_str()));
    if all_junk {
        return Err(
            "acceptance_criteria must contain at least one real entry (not just TODO/TBD/FIXME/XXX/???)."
                .to_string(),
        );
    }

    let root = ctx.state.get_project_root()?;
    let spike_id = create_spike_file(&root, name, description, &acceptance_criteria)?;

    Ok(format!("Created spike: {spike_id}"))
}

#[cfg(test)]
mod tests {
    use super::super::super::tools_list::handle_tools_list;
    use super::*;
    use crate::http::test_helpers::test_ctx;
    use serde_json::Value;

    #[test]
    fn create_spike_in_tools_list() {
        use super::super::super::tools_list::handle_tools_list;
        let resp = handle_tools_list(Some(json!(1)));
        let tools = resp.result.unwrap()["tools"].as_array().unwrap().clone();
        let tool = tools.iter().find(|t| t["name"] == "create_spike");
        assert!(tool.is_some(), "create_spike missing from tools list");
        let t = tool.unwrap();
        assert!(t["description"].is_string());
        let required = t["inputSchema"]["required"].as_array().unwrap();
        let req_names: Vec<&str> = required.iter().map(|v| v.as_str().unwrap()).collect();
        assert!(req_names.contains(&"name"));
        // description is optional
        assert!(!req_names.contains(&"description"));
    }

    #[test]
    fn tool_create_spike_missing_name() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(&json!({}), &ctx);
        assert!(result.is_err());
        assert!(result.unwrap_err().contains("name"));
    }

    #[test]
    fn tool_create_spike_rejects_empty_name() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result =
            tool_create_spike(&json!({"name": "!!!", "acceptance_criteria": ["AC"]}), &ctx);
        assert!(result.is_err());
        assert!(result.unwrap_err().contains("alphanumeric"));
    }

    #[test]
    fn tool_create_spike_creates_file() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());

        let result = tool_create_spike(
            &json!({
                "name": "Compare Encoders",
                "description": "Which encoder is fastest?",
                "acceptance_criteria": ["Encoder comparison is documented"]
            }),
            &ctx,
        )
        .unwrap();

        assert!(
            result.contains("_spike_compare_encoders"),
            "result should contain spike ID: {result}"
        );
        // Extract the actual spike ID from the result message (format: "Created spike: <id>").
        let spike_id = result.trim_start_matches("Created spike: ").trim();
        // Spike content should exist in the CRDT content store.
        let contents = crate::db::read_content(spike_id).expect("expected spike content in CRDT");
        assert!(contents.starts_with("---\nname: \"Compare Encoders\"\n---"));
        assert!(contents.contains("Which encoder is fastest?"));
    }

    #[test]
    fn tool_create_spike_creates_file_without_description() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());

        let result = tool_create_spike(
            &json!({"name": "My Spike", "acceptance_criteria": ["Spike findings documented"]}),
            &ctx,
        )
        .unwrap();
        assert!(
            result.contains("_spike_my_spike"),
            "result should contain spike ID: {result}"
        );
        // Extract the actual spike ID from the result message (format: "Created spike: <id>").
        let spike_id = result.trim_start_matches("Created spike: ").trim();

        // Spike content should exist in the CRDT content store.
        let contents = crate::db::read_content(spike_id).expect("expected spike content in CRDT");
        assert!(contents.starts_with("---\nname: \"My Spike\"\n---"));
        assert!(contents.contains("## Question\n\n- TBD\n"));
    }

    #[test]
    fn tool_create_spike_rejects_missing_acceptance_criteria() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(&json!({"name": "My Spike"}), &ctx);
        assert!(result.is_err());
        assert!(
            result.unwrap_err().contains("acceptance_criteria"),
            "error should mention acceptance_criteria"
        );
    }

    #[test]
    fn tool_create_spike_rejects_empty_acceptance_criteria() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(
            &json!({"name": "My Spike", "acceptance_criteria": []}),
            &ctx,
        );
        assert!(result.is_err());
        assert!(
            result.unwrap_err().contains("acceptance_criteria"),
            "error should mention acceptance_criteria"
        );
    }

    #[test]
    fn tool_create_spike_accepts_single_criterion() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(
            &json!({"name": "Single Criterion Spike", "acceptance_criteria": ["Findings documented"]}),
            &ctx,
        );
        assert!(result.is_ok(), "expected ok: {result:?}");
        assert!(result.unwrap().contains("Created spike:"));
    }

    #[test]
    fn tool_create_spike_rejects_all_junk_acceptance_criteria() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(
            &json!({"name": "Junk Spike", "acceptance_criteria": ["TODO", "TBD"]}),
            &ctx,
        );
        assert!(result.is_err());
        assert!(
            result.unwrap_err().contains("real entry"),
            "error should mention real entry"
        );
    }

    #[test]
    fn tool_create_spike_accepts_mixed_junk_and_real_acceptance_criteria() {
        let tmp = tempfile::tempdir().unwrap();
        let ctx = test_ctx(tmp.path());
        let result = tool_create_spike(
            &json!({"name": "Mixed Spike", "acceptance_criteria": ["TODO", "Real AC"]}),
            &ctx,
        );
        assert!(result.is_ok(), "expected ok for mixed AC: {result:?}");
        assert!(result.unwrap().contains("Created spike:"));
    }
}