pub mod api;

use std::sync::Arc;

use anyhow::Result;
use colored::Colorize;
use serde_json::{json, Value};
use toon_format::encode_default as toon_encode;

use crate::config::OutputFormat;
use crate::execution::{fan_out, ExecutionTarget};
use crate::render;
use api::{CustomRole, RolesApi, SystemRole};

fn custom_role_to_json(role: &CustomRole, include_profile: bool, profile: &str) -> Value {
    let mut v = json!({
        "role_id": role.role_id,
        "name": role.display_name(),
        "description": role.display_description(),
        "parent_role_id": role.parent_role_id,
        "parent_role_name": role.parent_role_name,
        "permissions_count": role.permissions_count(),
        "team_id": role.team_id,
    });
    if include_profile {
        if let Value::Object(ref mut m) = v {
            m.insert("profile".to_string(), Value::String(profile.to_string()));
        }
    }
    v
}

fn system_role_to_json(role: &SystemRole, include_profile: bool, profile: &str) -> Value {
    let mut v = json!({
        "role_id": role.role_id,
        "name": role.display_name(),
        "description": role.display_description(),
        "permissions_count": role.permissions_count(),
    });
    if include_profile {
        if let Value::Object(ref mut m) = v {
            m.insert("profile".to_string(), Value::String(profile.to_string()));
        }
    }
    v
}

fn read_from_file(path: &str) -> Result<Value> {
    let raw = if path == "-" {
        eprintln!("{}", "Reading role definition from stdin...".dimmed());
        use std::io::Read;
        let mut buf = String::new();
        std::io::stdin().read_to_string(&mut buf)?;
        buf
    } else {
        eprintln!(
            "{}",
            format!("Reading role definition from {path}...").dimmed()
        );
        std::fs::read_to_string(path)?
    };
    Ok(serde_json::from_str(&raw)?)
}

pub async fn run_list(targets: &[Arc<ExecutionTarget>], output: OutputFormat) -> Result<()> {
    eprintln!("{}", "Fetching custom roles...".dimmed());
    let include_profile = targets.len() > 1;

    let per_profile = fan_out(targets, |t| async move {
        let api = RolesApi::new(&t.client);
        Ok(api.list_custom().await?)
    })
    .await;

    let mut all_json: Vec<Value> = Vec::new();
    let mut all_items: Vec<(String, CustomRole)> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                for role in resp.roles {
                    all_json.push(custom_role_to_json(&role, include_profile, &profile));
                    all_items.push((profile.clone(), role));
                }
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json(&all_json)?,
        OutputFormat::Agents => {
            let toon =
                toon_encode(&all_json).map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            if all_items.is_empty() {
                render::print_no_results("No custom roles found.");
                return Ok(());
            }
            let rows: Vec<Vec<String>> = all_items
                .iter()
                .map(|(profile, role)| {
                    vec![
                        profile.clone(),
                        role.role_id.map(|id| id.to_string()).unwrap_or_default(),
                        role.display_name().to_string(),
                        role.display_description().to_string(),
                        role.parent_role_name.clone().unwrap_or_default(),
                        role.permissions_count().to_string(),
                    ]
                })
                .collect();
            render::render_table(
                &[
                    "Role ID",
                    "Name",
                    "Description",
                    "Parent Role",
                    "Permissions",
                ],
                rows,
                include_profile,
            );
        }
    }
    Ok(())
}

pub async fn run_get(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    output: OutputFormat,
) -> Result<()> {
    eprintln!("{}", format!("Fetching custom role {id}...").dimmed());
    let include_profile = targets.len() > 1;
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = RolesApi::new(&t.client);
            Ok(api.get_custom(&id).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                if let Some(role) = resp.role {
                    all_results.push(custom_role_to_json(&role, include_profile, &profile));
                }
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            render::render_get_text(
                &all_results,
                include_profile,
                "Custom role not found.",
                None::<&dyn Fn(&Value)>,
            )?;
        }
    }
    Ok(())
}

pub async fn run_create(
    targets: &[Arc<ExecutionTarget>],
    from_file: &str,
    output: OutputFormat,
) -> Result<()> {
    let body = read_from_file(from_file)?;
    eprintln!("{}", "Creating custom role...".dimmed());

    let per_profile = fan_out(targets, |t| {
        let body = body.clone();
        async move {
            let api = RolesApi::new(&t.client);
            Ok(api.create(&body).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                let id = resp
                    .id
                    .map(|id| id.to_string())
                    .unwrap_or_else(|| "unknown".to_string());
                eprintln!(
                    "{}",
                    format!("Created custom role (ID: {id}) in profile '{profile}'.").green()
                );
                let mut v = json!({ "id": resp.id });
                if targets.len() > 1 {
                    if let Value::Object(ref mut m) = v {
                        m.insert("profile".to_string(), Value::String(profile.to_string()));
                    }
                }
                all_results.push(v);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {}
    }
    Ok(())
}

pub async fn run_update(
    targets: &[Arc<ExecutionTarget>],
    id: &str,
    from_file: &str,
    output: OutputFormat,
) -> Result<()> {
    let body = read_from_file(from_file)?;
    eprintln!("{}", format!("Updating custom role {id}...").dimmed());
    let id = id.to_string();

    let per_profile = fan_out(targets, |t| {
        let body = body.clone();
        let id = id.clone();
        async move {
            let api = RolesApi::new(&t.client);
            Ok(api.update(&id, &body).await?)
        }
    })
    .await;

    let mut all_results: Vec<Value> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(val) => {
                eprintln!(
                    "{}",
                    format!("Updated custom role in profile '{profile}'.").green()
                );
                all_results.push(val);
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json_auto(&all_results)?,
        OutputFormat::Agents => {
            let toon = toon_encode(&all_results)
                .map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {}
    }
    Ok(())
}

pub async fn run_delete(targets: &[Arc<ExecutionTarget>], id: &str) -> Result<()> {
    eprintln!("{}", format!("Deleting custom role {id}...").dimmed());
    let id = id.to_string();
    let per_profile = fan_out(targets, |t| {
        let id = id.clone();
        async move {
            let api = RolesApi::new(&t.client);
            api.delete(&id).await?;
            Ok(())
        }
    })
    .await;
    for (profile, result) in per_profile {
        match result {
            Ok(()) => eprintln!(
                "{}",
                format!("Custom role {id} deleted in profile '{profile}'.").green()
            ),
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }
    Ok(())
}

pub async fn run_system(targets: &[Arc<ExecutionTarget>], output: OutputFormat) -> Result<()> {
    eprintln!("{}", "Fetching system roles...".dimmed());
    let include_profile = targets.len() > 1;

    let per_profile = fan_out(targets, |t| async move {
        let api = RolesApi::new(&t.client);
        Ok(api.list_system().await?)
    })
    .await;

    let mut all_json: Vec<Value> = Vec::new();
    let mut all_items: Vec<(String, SystemRole)> = Vec::new();
    for (profile, result) in per_profile {
        match result {
            Ok(resp) => {
                for role in resp.roles {
                    all_json.push(system_role_to_json(&role, include_profile, &profile));
                    all_items.push((profile.clone(), role));
                }
            }
            Err(e) => eprintln!("{}", format!("error from profile '{profile}': {e:#}").red()),
        }
    }

    match output {
        OutputFormat::Json => render::render_json(&all_json)?,
        OutputFormat::Agents => {
            let toon =
                toon_encode(&all_json).map_err(|e| anyhow::anyhow!("TOON encoding failed: {e}"))?;
            println!("{toon}");
        }
        OutputFormat::Text => {
            if all_items.is_empty() {
                render::print_no_results("No system roles found.");
                return Ok(());
            }
            let rows: Vec<Vec<String>> = all_items
                .iter()
                .map(|(profile, role)| {
                    vec![
                        profile.clone(),
                        role.role_id.map(|id| id.to_string()).unwrap_or_default(),
                        role.display_name().to_string(),
                        role.display_description().to_string(),
                        role.permissions_count().to_string(),
                    ]
                })
                .collect();
            render::render_table(
                &["Role ID", "Name", "Description", "Permissions"],
                rows,
                include_profile,
            );
        }
    }
    Ok(())
}
