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path: root/src/cmds/cmd/status.rs
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use std::{collections::HashMap, time::SystemTime};

use crate::{
    cmd_output,
    cmds::{
        arg::status::JVStatusArgument,
        collect::status::JVStatusCollect,
        r#in::status::JVStatusInput,
        out::status::{JVStatusOutput, JVStatusWrongModifyReason},
    },
    systems::cmd::{
        cmd_system::JVCommandContext,
        errors::{CmdExecuteError, CmdPrepareError},
        workspace_reader::LocalWorkspaceReader,
    },
};
use cmd_system_macros::exec;
use just_enough_vcs::vcs::{
    constants::VAULT_HOST_NAME, data::local::workspace_analyzer::ModifiedRelativePathBuf,
};

pub struct JVStatusCommand;
type Cmd = JVStatusCommand;
type Arg = JVStatusArgument;
type In = JVStatusInput;
type Collect = JVStatusCollect;

fn help_str() -> String {
    "".to_string()
}

async fn prepare(_args: &Arg, _ctx: &JVCommandContext) -> Result<In, CmdPrepareError> {
    Ok(JVStatusInput)
}

async fn collect(_args: &Arg, _ctx: &JVCommandContext) -> Result<Collect, CmdPrepareError> {
    // Initialize a reader for the local workspace and a default result structure
    let mut reader = LocalWorkspaceReader::default();
    let mut collect = JVStatusCollect::default();

    // Analyze the current status of the local workspace
    // (detects changes like created, modified, moved, etc.)
    let analyzed = reader.analyze_local_status().await?;

    // Retrieve the current account (member) ID
    let account = reader.current_account().await?;

    // Retrieve the name of the current sheet
    let sheet_name = reader.sheet_name().await?;

    // Is Host Mode
    let is_host_mode = reader.is_host_mode().await?;

    let cached_sheet = reader.cached_sheet(&sheet_name).await?;
    let sheet_holder = cached_sheet.holder().cloned().unwrap_or_default();
    let is_ref_sheet = sheet_holder == VAULT_HOST_NAME;

    // Get Latest file data
    let latest_file_data = reader.pop_latest_file_data(&account).await?;

    // Get the timestamp of the last update, defaulting to the current time if not available
    let update_time = reader
        .latest_info()
        .await?
        .update_instant
        .unwrap_or(SystemTime::now());

    // Record the current system time
    let now_time = SystemTime::now();

    // Populate the result structure with the gathered data
    collect.current_account = account;
    collect.current_sheet = sheet_name;
    collect.is_host_mode = is_host_mode;
    collect.in_ref_sheet = is_ref_sheet;
    collect.analyzed_result = analyzed;
    collect.update_time = update_time;
    collect.now_time = now_time;
    collect.latest_file_data = latest_file_data;
    Ok(collect)
}

#[exec]
async fn exec(
    _input: In,
    collect: Collect,
) -> Result<(Box<dyn std::any::Any + Send + 'static>, String), CmdExecuteError> {
    let mut wrong_modified_items: HashMap<ModifiedRelativePathBuf, JVStatusWrongModifyReason> =
        HashMap::new();

    let latest_file_data = &collect.latest_file_data;

    // Calculate whether modifications are correc
    let modified = &collect.analyzed_result.modified;
    for item in modified {
        // Get mapping
        let Ok(mapping) = collect.local_sheet_data.mapping_data(&item) else {
            continue;
        };

        // Check base version
        {
            let base_version = mapping.version_when_updated().clone();
            let Some(latest_version) = latest_file_data
                .file_version(mapping.mapping_vfid())
                .cloned()
            else {
                continue;
            };

            // Base version dismatch
            if base_version != latest_version {
                wrong_modified_items.insert(
                    item.clone(),
                    JVStatusWrongModifyReason::BaseVersionMismatch {
                        base_version,
                        latest_version,
                    },
                );
                continue;
            }
        }

        // Check edit right (only check when current is not HOST)
        if collect.current_account != VAULT_HOST_NAME {
            let holder = latest_file_data.file_holder(mapping.mapping_vfid());
            if holder.is_none() {
                wrong_modified_items.insert(item.clone(), JVStatusWrongModifyReason::NoHolder);
                continue;
            }

            let holder = holder.cloned().unwrap();
            if &collect.current_account != &holder {
                wrong_modified_items.insert(
                    item.clone(),
                    JVStatusWrongModifyReason::ModifiedButNotHeld { holder: holder },
                );
            }
        }
    }

    let output = JVStatusOutput {
        current_account: collect.current_account,
        current_sheet: collect.current_sheet,
        is_host_mode: collect.is_host_mode,
        in_ref_sheet: collect.in_ref_sheet,
        analyzed_result: collect.analyzed_result,
        wrong_modified_items: wrong_modified_items,
        update_time: collect.update_time,
        now_time: collect.now_time,
    };

    cmd_output!(output, JVStatusOutput)
}

crate::command_template!();