#ifndef _IMPORTS_ODS_WRITER_HPP_
#define _IMPORTS_ODS_WRITER_HPP_

#include <string>
#include <vector>

// Minimal OpenDocument Spreadsheet (.ods) writer. Backed by libzip +
// pugixml (already in the build for the ODS *importer*). Produces
// multi-sheet workbooks; each sheet is a 2-D grid of string cells.
//
// Usage:
//     OdsWriter w;
//     auto *s1 = w.add_sheet("connection A");
//     s1->set(0, 0, "header1");
//     s1->set(0, 1, "header2");
//     s1->set(1, 0, "value");
//     std::string err;
//     bool ok = w.save("out.ods", err);
//
// Limitations (intentional, the format is huge):
//   - string cells only (no numbers / dates / formulas)
//   - no styles, no merged cells, no formatting
//   - a single empty row is emitted when a row has at least one set cell;
//     trailing empty rows are skipped.

class OdsSheet {
public:
    explicit OdsSheet(std::string name) : name_(std::move(name)) {}

    void set(int row, int col, std::string value);

    // Index of the row that holds the column headers — gets the bold/grey
    // style, anchors the freeze, and is the first row of the auto-filter
    // range. Rows above it are rendered un-styled (a place for free-form
    // metadata such as the connection name). Default 0 = first row is
    // the header (no meta block).
    void set_header_row(int r) { header_row_ = r; }
    int  header_row() const    { return header_row_; }

    const std::string &name() const { return name_; }
    int rows() const { return (int)cells_.size(); }
    int cols() const;
    const std::string &cell(int row, int col) const;

private:
    std::string name_;
    int header_row_ = 0;
    // Row-major sparse storage: cells_[r][c] = value. Rows/cols are grown
    // lazily on set().
    std::vector<std::vector<std::string>> cells_;
};

class OdsWriter {
public:
    OdsSheet *add_sheet(const std::string &name);
    bool save(const std::string &path, std::string &error) const;

private:
    std::vector<OdsSheet> sheets_;
};

#endif  // _IMPORTS_ODS_WRITER_HPP_