//! A folder import's per-file views, saved and reloaded, as both front ends
//! project them (improvise-lpzu). Evidence: `context/test-evidence/cli.md`.

use improvise::import::csv_parser::merge_csvs_from;
use improvise::import::wizard::ImportPipeline;
use improvise::persistence::{format_md, parse_md};
use improvise::ui::app::App;
use improvise_command::ui::project::{Viewport, grid_in};
use improvise_io::storage::{MemoryFs, Storage};

fn reloaded_folder_import() -> App {
    let fs = MemoryFs::new();
    let files = [
        (
            "maat/age.csv",
            "entity,age-months\nsrc/a.rs,2\nsrc/c.rs,7\n",
        ),
        (
            "maat/coupling.csv",
            "entity,coupled,degree,average-revs\nsrc/a.rs,src/b.rs,80,5\nsrc/b.rs,src/c.rs,40,3\n",
        ),
        ("maat/soc.csv", "entity,soc\n"),
    ];
    for (path, body) in files {
        fs.write(std::path::Path::new(path), body.as_bytes())
            .unwrap();
    }
    let merged = merge_csvs_from(&fs, &files.map(|(p, _)| p)).unwrap();
    let (wb, _) = ImportPipeline::from_merge(merged)
        .build_model_with_warnings()
        .unwrap();
    App::new(parse_md(&format_md(&wb)).unwrap(), None)
}

/// Evidence: `context/test-evidence/cli.md`.
#[test]
fn a_saved_per_file_view_projects_only_its_file() {
    let app = reloaded_folder_import();
    let whole = Viewport {
        row_offset: 0,
        col_offset: 0,
        rows: 100,
        cols: 100,
    };
    for (view, texts) in [("age", ["2.00", "7.00"]), ("coupling", ["5.00", "3.00"])] {
        let grid = grid_in(&app, view, whole);
        let file = grid.page_coords.iter().find(|p| p.cat == "File").unwrap();
        assert_eq!((file.selected.as_str(), &file.items), (view, &None));
        let drawn: Vec<&str> = grid
            .cells
            .iter()
            .flatten()
            .map(|c| c.text.as_str())
            .filter(|t| !t.is_empty())
            .collect();
        assert_eq!(drawn, texts, "{view}");
    }

    // A header-only file: its item exists, and its view has nothing editable.
    let soc = grid_in(&app, "soc", whole);
    let file = soc.page_coords.iter().find(|p| p.cat == "File").unwrap();
    assert_eq!(file.selected, "soc");
    assert!(soc.records, "a file with no measure opens in records mode");
    assert_eq!(soc.extent.rows, 0, "{soc:?}");
}