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use crate::util::go_type::FFIError;
use crate::util::go_type::NosqldbTableLimitsPtr;
use crate::util::util::ref_free_drop;

use self::ffi::nosqldb_table_limits_new;
use self::ffi::nosqldb_table_limits_set;

pub(crate) mod ffi {
    use std::ffi::c_uint;

    use crate::util::{go_type::{NosqldbTableLimitsPtr, FFIError, GoErrorPtr}, util::c_char_to_str};

    use super::{NosqldbTableLimits, NosqldbTableLimitsChild};

    extern "C" {
        fn ffi_nosqldb_table_limits_new() -> NosqldbTableLimitsPtr;
    }

    pub fn nosqldb_table_limits_new(
    ) -> Result<NosqldbTableLimits, FFIError> {
        let nosqldb_table_limits_ptr: NosqldbTableLimitsPtr = unsafe { ffi_nosqldb_table_limits_new() };

        Ok(NosqldbTableLimits{ nosqldb_table_limits_ptr })
    }

    extern "C" {
        fn ffi_nosqldb_table_limits_set(tlmts: NosqldbTableLimitsPtr, key: c_uint, value: c_uint) -> GoErrorPtr;
    }

    pub fn nosqldb_table_limits_set(
        tlmts: &mut NosqldbTableLimits,
        key: NosqldbTableLimitsChild,
        value: c_uint,
    ) -> Result<(), FFIError> {
        let err = unsafe { ffi_nosqldb_table_limits_set(tlmts.nosqldb_table_limits_ptr, key as c_uint, value as c_uint) };
        if err.is_null() {
            Ok(())
        } else {
            Err(FFIError::GoError(c_char_to_str(err)?))
        }
    }
}

#[derive(Debug)]
pub struct NosqldbTableLimits {
    pub(crate) nosqldb_table_limits_ptr: NosqldbTableLimitsPtr,
}

impl NosqldbTableLimits {
    pub fn new () -> Result<Self, FFIError> {
        nosqldb_table_limits_new()
    }
    pub fn set (&mut self, key: NosqldbTableLimitsChild, value: u32) -> Result<(), FFIError> {
        nosqldb_table_limits_set(self, key, value)
    }
}

impl Drop for NosqldbTableLimits {
    fn drop(&mut self) {
        ref_free_drop(self.nosqldb_table_limits_ptr);
    }
}

pub enum NosqldbTableLimitsChild {
    ReadUnits,
    WriteUnits,
    StorageGB,
}